diff --git a/package-lock.json b/package-lock.json
index 23c96ee..2c23e9e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,65 +5,77 @@
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@@ -129,6 +141,12 @@
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+      "version": "6.4.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-6.4.0.tgz",
+      "integrity": "sha512-Z0CVh/YE217Foyb488eo+iBv+r7eAQ0wSTyApi9n06jhcA3z6Nidg/EGvl0UFkg7kMdKxfBzzr+o9JF+cevgMg==",
+      "dev": true,
+      "requires": {
+        "lodash.sortby": "4.7.0",
+        "tr46": "1.0.1",
+        "webidl-conversions": "4.0.2"
       }
     },
     "which": {
@@ -5830,15 +7245,25 @@
         "signal-exit": "3.0.2"
       }
     },
+    "ws": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-4.1.0.tgz",
+      "integrity": "sha512-ZGh/8kF9rrRNffkLFV4AzhvooEclrOH0xaugmqGsIfFgOE/pIz4fMc4Ef+5HSQqTEug2S9JZIWDR47duDSLfaA==",
+      "dev": true,
+      "requires": {
+        "async-limiter": "1.0.0",
+        "safe-buffer": "5.1.1"
+      }
+    },
     "xdg-basedir": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/xdg-basedir/-/xdg-basedir-3.0.0.tgz",
       "integrity": "sha1-SWsswQnsqNus/i3HK2A8F8WHCtQ="
     },
     "xml-name-validator": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-2.0.1.tgz",
-      "integrity": "sha1-TYuPHszTQZqjYgYb7O9RXh5VljU=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-3.0.0.tgz",
+      "integrity": "sha512-A5CUptxDsvxKJEU3yO6DuWBSJz/qizqzJKOMIfUJHETbBw/sFaDxgd6fxm1ewUaM0jZ444Fc5vC5ROYurg/4Pw==",
       "dev": true
     },
     "y18n": {
@@ -5850,6 +7275,113 @@
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
       "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI="
+    },
+    "yargs": {
+      "version": "10.1.2",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-10.1.2.tgz",
+      "integrity": "sha512-ivSoxqBGYOqQVruxD35+EyCFDYNEFL/Uo6FcOnz+9xZdZzK0Zzw4r4KhbrME1Oo2gOggwJod2MnsdamSG7H9ig==",
+      "dev": true,
+      "requires": {
+        "cliui": "4.0.0",
+        "decamelize": "1.2.0",
+        "find-up": "2.1.0",
+        "get-caller-file": "1.0.2",
+        "os-locale": "2.1.0",
+        "require-directory": "2.1.1",
+        "require-main-filename": "1.0.1",
+        "set-blocking": "2.0.0",
+        "string-width": "2.1.1",
+        "which-module": "2.0.0",
+        "y18n": "3.2.1",
+        "yargs-parser": "8.1.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
+        },
+        "cliui": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.0.0.tgz",
+          "integrity": "sha512-nY3W5Gu2racvdDk//ELReY+dHjb9PlIcVDFXP72nVIhq2Gy3LuVXYwJoPVudwQnv1shtohpgkdCKT2YaKY0CKw==",
+          "dev": true,
+          "requires": {
+            "string-width": "2.1.1",
+            "strip-ansi": "4.0.0",
+            "wrap-ansi": "2.1.0"
+          }
+        },
+        "find-up": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-2.1.0.tgz",
+          "integrity": "sha1-RdG35QbHF93UgndaK3eSCjwMV6c=",
+          "dev": true,
+          "requires": {
+            "locate-path": "2.0.0"
+          }
+        },
+        "is-fullwidth-code-point": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
+        },
+        "os-locale": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/os-locale/-/os-locale-2.1.0.tgz",
+          "integrity": "sha512-3sslG3zJbEYcaC4YVAvDorjGxc7tv6KVATnLPZONiljsUncvihe9BQoVCEs0RZ1kmf4Hk9OBqlZfJZWI4GanKA==",
+          "dev": true,
+          "requires": {
+            "execa": "0.7.0",
+            "lcid": "1.0.0",
+            "mem": "1.1.0"
+          }
+        },
+        "string-width": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+          "dev": true,
+          "requires": {
+            "is-fullwidth-code-point": "2.0.0",
+            "strip-ansi": "4.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "3.0.0"
+          }
+        },
+        "which-module": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
+          "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
+          "dev": true
+        }
+      }
+    },
+    "yargs-parser": {
+      "version": "8.1.0",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-8.1.0.tgz",
+      "integrity": "sha512-yP+6QqN8BmrgW2ggLtTbdrOyBNSI7zBa4IykmiV5R1wl1JWNxQvWhMfMdmzIYtKU7oP3OOInY/tl2ov3BDjnJQ==",
+      "dev": true,
+      "requires": {
+        "camelcase": "4.1.0"
+      },
+      "dependencies": {
+        "camelcase": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
+          "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
+          "dev": true
+        }
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index 6fb8007..73327f9 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
   },
   "repository": "git@github.com:Seich/Beau.git",
   "devDependencies": {
-    "jest": "22.0.4"
+    "jest": "^22.4.0"
   },
   "jest": {
     "testEnvironment": "node",
diff --git a/src/__mocks__/beau-dynamic-values.js b/src/__mocks__/beau-dynamic-values.js
new file mode 100644
index 0000000..2462e19
--- /dev/null
+++ b/src/__mocks__/beau-dynamic-values.js
@@ -0,0 +1,11 @@
+class DynamicValues {
+	constructor(registry, settings = {}) {
+		registry.defineDynamicValue('add', this.add);
+	}
+
+	add(x, y) {
+		return x + y;
+	}
+}
+
+module.exports = DynamicValues;
diff --git a/src/__mocks__/beau-modifiers.js b/src/__mocks__/beau-modifiers.js
new file mode 100644
index 0000000..5ffdb76
--- /dev/null
+++ b/src/__mocks__/beau-modifiers.js
@@ -0,0 +1,19 @@
+class Modifiers {
+	constructor(registry, settings = {}) {
+		registry.addPreRequestModifier(this.preRequest);
+		registry.addPostRequestModifier(this.postRequest);
+	}
+
+	preRequest(request, orig) {
+		request.headers.preRequestModifier = true;
+		return request;
+	}
+
+	postRequest(response, orig) {
+		response.body = 'Hello World';
+		response.response.body = 'Hello World';
+		return response;
+	}
+}
+
+module.exports = Modifiers;
diff --git a/src/__mocks__/requireg.js b/src/__mocks__/requireg.js
index 7a16d84..b5225a5 100644
--- a/src/__mocks__/requireg.js
+++ b/src/__mocks__/requireg.js
@@ -1,19 +1,3 @@
 module.exports = function(name) {
-	return function(settings) {
-		let response = {
-			name: `${name}`,
-			preRequest(request) {
-				request.wasModified = true;
-
-				return request;
-			},
-
-			postResponse(response) {
-				response.changed = true;
-				return response;
-			}
-		};
-
-		return response;
-	};
+	return require(name);
 };
diff --git a/src/__tests__/__snapshots__/beau.spec.js.snap b/src/__tests__/__snapshots__/beau.spec.js.snap
index b8f736f..0d6ae5c 100644
--- a/src/__tests__/__snapshots__/beau.spec.js.snap
+++ b/src/__tests__/__snapshots__/beau.spec.js.snap
@@ -12,7 +12,33 @@ Beau {
     "ENDPOINT": "http://jsonplaceholder.typicode.com",
     "ENVIRONMENT": Object {},
     "HOSTS": Array [],
-    "PLUGINS": Array [],
+    "PLUGINS": Plugins {
+      "context": Object {},
+      "registry": Object {
+        "dynamicValues": Array [],
+        "postRequestModifiers": Array [],
+        "preRequestModifiers": Array [],
+      },
+    },
+    "REQUESTS": Array [
+      Object {
+        "ALIAS": "get-post",
+        "ENDPOINT": "http://jsonplaceholder.typicode.com",
+        "HEADERS": Object {
+          "authentication": "hello",
+        },
+        "REQUEST": "GET /posts/1",
+      },
+      Object {
+        "ALIAS": "user",
+        "ENDPOINT": "http://jsonplaceholder.typicode.com",
+        "HEADERS": Object {
+          "authentication": "hello",
+          "hello": "world",
+        },
+        "REQUEST": "GET /user",
+      },
+    ],
     "VERSION": 1,
     "configKeys": Array [
       "VERSION",
@@ -48,7 +74,9 @@ Beau {
       "endpoint": "http://jsonplaceholder.typicode.com",
       "version": 1,
     },
-    "requests": Array [
+  },
+  "requests": RequestList {
+    "REQUESTS": Array [
       Object {
         "ALIAS": "get-post",
         "ENDPOINT": "http://jsonplaceholder.typicode.com",
@@ -67,8 +95,6 @@ Beau {
         "REQUEST": "GET /user",
       },
     ],
-  },
-  "requests": RequestList {
     "cache": RequestCache {
       "$cache": Object {
         "$env": Object {},
@@ -84,7 +110,33 @@ Beau {
       "ENDPOINT": "http://jsonplaceholder.typicode.com",
       "ENVIRONMENT": Object {},
       "HOSTS": Array [],
-      "PLUGINS": Array [],
+      "PLUGINS": Plugins {
+        "context": Object {},
+        "registry": Object {
+          "dynamicValues": Array [],
+          "postRequestModifiers": Array [],
+          "preRequestModifiers": Array [],
+        },
+      },
+      "REQUESTS": Array [
+        Object {
+          "ALIAS": "get-post",
+          "ENDPOINT": "http://jsonplaceholder.typicode.com",
+          "HEADERS": Object {
+            "authentication": "hello",
+          },
+          "REQUEST": "GET /posts/1",
+        },
+        Object {
+          "ALIAS": "user",
+          "ENDPOINT": "http://jsonplaceholder.typicode.com",
+          "HEADERS": Object {
+            "authentication": "hello",
+            "hello": "world",
+          },
+          "REQUEST": "GET /user",
+        },
+      ],
       "VERSION": 1,
       "configKeys": Array [
         "VERSION",
@@ -120,25 +172,6 @@ Beau {
         "endpoint": "http://jsonplaceholder.typicode.com",
         "version": 1,
       },
-      "requests": Array [
-        Object {
-          "ALIAS": "get-post",
-          "ENDPOINT": "http://jsonplaceholder.typicode.com",
-          "HEADERS": Object {
-            "authentication": "hello",
-          },
-          "REQUEST": "GET /posts/1",
-        },
-        Object {
-          "ALIAS": "user",
-          "ENDPOINT": "http://jsonplaceholder.typicode.com",
-          "HEADERS": Object {
-            "authentication": "hello",
-            "hello": "world",
-          },
-          "REQUEST": "GET /user",
-        },
-      ],
     },
     "list": Array [
       Request {
@@ -159,6 +192,14 @@ Beau {
           },
           "REQUEST": "GET /posts/1",
         },
+        "plugins": Plugins {
+          "context": Object {},
+          "registry": Object {
+            "dynamicValues": Array [],
+            "postRequestModifiers": Array [],
+            "preRequestModifiers": Array [],
+          },
+        },
       },
       Request {
         "ALIAS": "user",
@@ -180,26 +221,14 @@ Beau {
           },
           "REQUEST": "GET /user",
         },
-      },
-    ],
-    "modifiers": Array [],
-    "requests": Array [
-      Object {
-        "ALIAS": "get-post",
-        "ENDPOINT": "http://jsonplaceholder.typicode.com",
-        "HEADERS": Object {
-          "authentication": "hello",
+        "plugins": Plugins {
+          "context": Object {},
+          "registry": Object {
+            "dynamicValues": Array [],
+            "postRequestModifiers": Array [],
+            "preRequestModifiers": Array [],
+          },
         },
-        "REQUEST": "GET /posts/1",
-      },
-      Object {
-        "ALIAS": "user",
-        "ENDPOINT": "http://jsonplaceholder.typicode.com",
-        "HEADERS": Object {
-          "authentication": "hello",
-          "hello": "world",
-        },
-        "REQUEST": "GET /user",
       },
     ],
   },
diff --git a/src/__tests__/__snapshots__/config.spec.js.snap b/src/__tests__/__snapshots__/config.spec.js.snap
index dc9ee9c..1f89fc2 100644
--- a/src/__tests__/__snapshots__/config.spec.js.snap
+++ b/src/__tests__/__snapshots__/config.spec.js.snap
@@ -41,7 +41,68 @@ Config {
       "host": "info",
     },
   ],
-  "PLUGINS": Array [],
+  "PLUGINS": Plugins {
+    "context": Object {},
+    "registry": Object {
+      "dynamicValues": Array [],
+      "postRequestModifiers": Array [],
+      "preRequestModifiers": Array [],
+    },
+  },
+  "REQUESTS": Array [
+    Object {
+      "ALIAS": "e1",
+      "ENDPOINT": "http://example.org",
+      "HEADERS": Object {
+        "hello": "mars",
+      },
+      "REQUEST": "GET /e1",
+    },
+    Object {
+      "ALIAS": "com:e2",
+      "ENDPOINT": "http://example.com",
+      "HEADERS": Object {
+        "hello": "world",
+        "world": "hello",
+      },
+      "REQUEST": "GET /e2",
+    },
+    Object {
+      "ALIAS": "com:posts",
+      "ENDPOINT": "http://example.com",
+      "HEADERS": Object {
+        "hello": "world",
+        "world": "hello",
+      },
+      "REQUEST": "GET /posts",
+    },
+    Object {
+      "ALIAS": "net:e3",
+      "ENDPOINT": "http://example.net",
+      "HEADERS": Object {
+        "hello": "world",
+        "world": "bye",
+      },
+      "REQUEST": "GET /e3",
+    },
+    Object {
+      "ALIAS": "net:posts",
+      "ENDPOINT": "http://example.net",
+      "HEADERS": Object {
+        "hello": "world",
+        "world": "bye",
+      },
+      "REQUEST": "GET /posts",
+    },
+    Object {
+      "ALIAS": "info:posts",
+      "ENDPOINT": "http://example.info",
+      "HEADERS": Object {
+        "hello": "mars",
+      },
+      "REQUEST": "GET /posts",
+    },
+  ],
   "VERSION": 1,
   "configKeys": Array [
     "VERSION",
@@ -101,60 +162,6 @@ Config {
       },
     ],
   },
-  "requests": Array [
-    Object {
-      "ALIAS": "e1",
-      "ENDPOINT": "http://example.org",
-      "HEADERS": Object {
-        "hello": "mars",
-      },
-      "REQUEST": "GET /e1",
-    },
-    Object {
-      "ALIAS": "com:e2",
-      "ENDPOINT": "http://example.com",
-      "HEADERS": Object {
-        "hello": "world",
-        "world": "hello",
-      },
-      "REQUEST": "GET /e2",
-    },
-    Object {
-      "ALIAS": "com:posts",
-      "ENDPOINT": "http://example.com",
-      "HEADERS": Object {
-        "hello": "world",
-        "world": "hello",
-      },
-      "REQUEST": "GET /posts",
-    },
-    Object {
-      "ALIAS": "net:e3",
-      "ENDPOINT": "http://example.net",
-      "HEADERS": Object {
-        "hello": "world",
-        "world": "bye",
-      },
-      "REQUEST": "GET /e3",
-    },
-    Object {
-      "ALIAS": "net:posts",
-      "ENDPOINT": "http://example.net",
-      "HEADERS": Object {
-        "hello": "world",
-        "world": "bye",
-      },
-      "REQUEST": "GET /posts",
-    },
-    Object {
-      "ALIAS": "info:posts",
-      "ENDPOINT": "http://example.info",
-      "HEADERS": Object {
-        "hello": "mars",
-      },
-      "REQUEST": "GET /posts",
-    },
-  ],
 }
 `;
 
@@ -169,7 +176,33 @@ Config {
   "ENDPOINT": "http://jsonplaceholder.typicode.com",
   "ENVIRONMENT": Object {},
   "HOSTS": Array [],
-  "PLUGINS": Array [],
+  "PLUGINS": Plugins {
+    "context": Object {},
+    "registry": Object {
+      "dynamicValues": Array [],
+      "postRequestModifiers": Array [],
+      "preRequestModifiers": Array [],
+    },
+  },
+  "REQUESTS": Array [
+    Object {
+      "ALIAS": "get-post",
+      "ENDPOINT": "http://jsonplaceholder.typicode.com",
+      "HEADERS": Object {
+        "authentication": "hello",
+      },
+      "REQUEST": "GET /posts/1",
+    },
+    Object {
+      "ALIAS": "user",
+      "ENDPOINT": "http://jsonplaceholder.typicode.com",
+      "HEADERS": Object {
+        "authentication": "hello",
+        "hello": "world",
+      },
+      "REQUEST": "GET /user",
+    },
+  ],
   "VERSION": 1,
   "configKeys": Array [
     "VERSION",
@@ -205,24 +238,5 @@ Config {
     "endpoint": "http://jsonplaceholder.typicode.com",
     "version": 1,
   },
-  "requests": Array [
-    Object {
-      "ALIAS": "get-post",
-      "ENDPOINT": "http://jsonplaceholder.typicode.com",
-      "HEADERS": Object {
-        "authentication": "hello",
-      },
-      "REQUEST": "GET /posts/1",
-    },
-    Object {
-      "ALIAS": "user",
-      "ENDPOINT": "http://jsonplaceholder.typicode.com",
-      "HEADERS": Object {
-        "authentication": "hello",
-        "hello": "world",
-      },
-      "REQUEST": "GET /user",
-    },
-  ],
 }
 `;
diff --git a/src/__tests__/__snapshots__/plugins.spec.js.snap b/src/__tests__/__snapshots__/plugins.spec.js.snap
new file mode 100644
index 0000000..c2ece27
--- /dev/null
+++ b/src/__tests__/__snapshots__/plugins.spec.js.snap
@@ -0,0 +1,49 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Beau's plugin system Dynamic Values should look for dynamic values executing and replacing them 1`] = `
+Object {
+  "body": "Hello World",
+  "request": Object {
+    "body": undefined,
+    "endpoint": "http://example.com/hello/3",
+    "headers": Object {
+      "count": "3",
+      "preRequestModifier": true,
+    },
+  },
+  "response": Object {
+    "body": "Hello World",
+    "headers": Array [],
+    "status": 200,
+  },
+}
+`;
+
+exports[`Beau's plugin system Request Modifiers should modify the request and response using modifiers. 1`] = `
+Object {
+  "body": "Hello World",
+  "request": Object {
+    "body": undefined,
+    "endpoint": "http://example.com/user",
+    "headers": Object {
+      "preRequestModifier": true,
+    },
+  },
+  "response": Object {
+    "body": "Hello World",
+    "headers": Array [],
+    "status": 200,
+  },
+}
+`;
+
+exports[`Beau's plugin system shouldn't do anything when given an empty array. 1`] = `
+Plugins {
+  "context": Object {},
+  "registry": Object {
+    "dynamicValues": Array [],
+    "postRequestModifiers": Array [],
+    "preRequestModifiers": Array [],
+  },
+}
+`;
diff --git a/src/__tests__/__snapshots__/request.spec.js.snap b/src/__tests__/__snapshots__/request.spec.js.snap
index 9d11666..4f7c00b 100644
--- a/src/__tests__/__snapshots__/request.spec.js.snap
+++ b/src/__tests__/__snapshots__/request.spec.js.snap
@@ -35,22 +35,3 @@ Object {
   },
 }
 `;
-
-exports[`Request should use modifiers 1`] = `
-Array [
-  Array [
-    Object {
-      "endpoint": "http://martianwabbit.com/user",
-      "headers": Object {},
-      "method": "GET",
-      "payload": Object {},
-      "query": Object {},
-    },
-    Object {
-      "alias": "show",
-      "endpoint": "http://martianwabbit.com",
-      "request": "GET /user",
-    },
-  ],
-]
-`;
diff --git a/src/__tests__/__snapshots__/requestList.spec.js.snap b/src/__tests__/__snapshots__/requestList.spec.js.snap
index a7687de..20e6c16 100644
--- a/src/__tests__/__snapshots__/requestList.spec.js.snap
+++ b/src/__tests__/__snapshots__/requestList.spec.js.snap
@@ -3,7 +3,6 @@
 exports[`RequestList should execute requests by alias. 1`] = `
 Object {
   "body": "{\\"hello\\": \\"world\\"}",
-  "changed": true,
   "request": Object {
     "body": Object {
       "lastname": "Diaz",
diff --git a/src/__tests__/config.spec.js b/src/__tests__/config.spec.js
index 1eaef8c..921c923 100644
--- a/src/__tests__/config.spec.js
+++ b/src/__tests__/config.spec.js
@@ -31,7 +31,7 @@ describe('Config', () => {
         `);
 
     const config = new Config(doc);
-    expect(Object.keys(config.requests).length).toBe(4);
+    expect(Object.keys(config.REQUESTS).length).toBe(4);
   });
 
   it('should set up defaults for all requests', () => {
@@ -53,7 +53,7 @@ describe('Config', () => {
     const config = new Config(doc);
 
     expect(config).toMatchSnapshot();
-    Object.values(config.requests).forEach(r => {
+    Object.values(config.REQUESTS).forEach(r => {
       expect(r.HEADERS.authentication).toMatch('hello');
     });
   });
@@ -115,8 +115,8 @@ describe('Config', () => {
 
     let config = new Config(doc);
 
-    expect(config.requests[0].ALIAS).toBe('test1:posts');
-    expect(config.requests[1].ALIAS).toBe('test2:posts');
+    expect(config.REQUESTS[0].ALIAS).toBe('test1:posts');
+    expect(config.REQUESTS[1].ALIAS).toBe('test2:posts');
   });
 
   it(`should throw if host doesn't have a host key`, () => {
@@ -153,6 +153,6 @@ describe('Config', () => {
         `);
 
     let config = new Config(doc);
-    expect(config.requests[0].HEADERS.hello).toBe(1);
+    expect(config.REQUESTS[0].HEADERS.hello).toBe(1);
   });
 });
diff --git a/src/__tests__/plugins.spec.js b/src/__tests__/plugins.spec.js
new file mode 100644
index 0000000..e6bb181
--- /dev/null
+++ b/src/__tests__/plugins.spec.js
@@ -0,0 +1,94 @@
+const yaml = require('js-yaml');
+const Config = require('../config');
+const Plugins = require('../plugins');
+const Request = require('../request');
+const RequestCache = require('../requestCache');
+
+describe(`Beau's plugin system`, () => {
+    let config;
+    let request;
+    let plugins;
+
+    beforeEach(() => {
+        const doc = yaml.safeLoad(`
+            version: 1
+            endpoint: 'http://example.com'
+
+            plugins:
+                - Modifiers:
+                    data: hi
+                - DynamicValues
+
+            GET /posts/$[add(1, 1)]: get-post
+        `);
+
+        config = new Config(doc);
+        plugins = config.PLUGINS;
+    });
+
+    it('should load all plugins', () => {
+        expect(plugins.registry.preRequestModifiers.length).toBe(1);
+        expect(plugins.registry.postRequestModifiers.length).toBe(1);
+        expect(plugins.registry.dynamicValues.length).toBe(1);
+    });
+
+    it(`should throw if given an invalid configuration`, () => {
+        expect(() => new Plugins([{ test1: true, test2: true }])).toThrow();
+    });
+
+    it(`shouldn't do anything when given an empty array.`, () => {
+        expect(new Plugins()).toMatchSnapshot();
+    });
+
+    describe(`Request Modifiers`, () => {
+        beforeEach(() => {
+            request = new Request(
+                {
+                    request: 'POST /user',
+                    endpoint: 'http://example.com',
+                    alias: 'update'
+                },
+                plugins
+            );
+        });
+
+        it(`should modify the request and response using modifiers.`, async () => {
+            await expect(request.exec()).resolves.toMatchSnapshot();
+        });
+    });
+
+    describe(`Dynamic Values`, () => {
+        beforeEach(() => {
+            request = new Request(
+                {
+                    request: 'PATCH /hello/$[add(1, 2)]',
+                    endpoint: 'http://example.com',
+                    alias: 'say-hello',
+                    headers: {
+                        count: '$[add(1, $value2)]'
+                    }
+                },
+                plugins
+            );
+        });
+
+        it(`should look for dynamic values executing and replacing them`, async () => {
+            let cache = new RequestCache();
+            cache.add('$value2', '2');
+
+            let req = await request.exec(cache);
+
+            expect(req).toHaveProperty('request.headers.count', '3');
+            expect(req).toMatchSnapshot();
+        });
+
+        it(`should throw when calling an undefined dynamic value`, async () => {
+            request = new Request({
+                request: 'POST /hello/$[notAvailable(1, 2)]',
+                alias: 'say-hello'
+            });
+
+            await expect(request.exec()).rejects.toThrow();
+        });
+    });
+});
diff --git a/src/__tests__/request.spec.js b/src/__tests__/request.spec.js
index bccf391..e739b36 100644
--- a/src/__tests__/request.spec.js
+++ b/src/__tests__/request.spec.js
@@ -64,7 +64,7 @@ describe('Request', () => {
 	});
 
 	it('should execute a request', async () => {
-		await expect(request.exec([], cache)).resolves.toMatchSnapshot();
+		await expect(request.exec(cache)).resolves.toMatchSnapshot();
 		await expect(
 			requestWithoutDependencies.exec()
 		).resolves.toMatchSnapshot();
@@ -74,21 +74,4 @@ describe('Request', () => {
 		requestPromiseNativeMock.fail = true;
 		await expect(requestWithoutDependencies.exec()).rejects.toThrow(Error);
 	});
-
-	it('should use modifiers', async () => {
-		const preRequest = jest.fn();
-		const withPreRequest = [{ preRequest }];
-
-		const notCalled = jest.fn();
-		const nonModifiers = [{ notCalled }];
-
-		await requestWithoutDependencies.exec(withPreRequest);
-
-		expect(preRequest).toHaveBeenCalled();
-		expect(preRequest.mock.calls).toMatchSnapshot();
-
-		await requestWithoutDependencies.exec(nonModifiers);
-
-		expect(notCalled).not.toHaveBeenCalled();
-	});
 });
diff --git a/src/__tests__/requestList.spec.js b/src/__tests__/requestList.spec.js
index b9fd190..a344542 100644
--- a/src/__tests__/requestList.spec.js
+++ b/src/__tests__/requestList.spec.js
@@ -12,17 +12,6 @@ describe('RequestList', () => {
 	const doc = {
 		ENDPOINT: endpoint,
 		ENVIRONMENT: env,
-		PLUGINS: [
-			{
-				'beau-jwt': {
-					data: {
-						secret: 'shhh.',
-						userId: 412
-					}
-				}
-			},
-			'beau-document'
-		],
 		'GET /post': { alias: 'get-posts' },
 		'POST /user': {
 			alias: 'user',
@@ -38,7 +27,12 @@ describe('RequestList', () => {
 		requestPromiseNativeMock.fail = false;
 
 		let config = new Config(doc);
-		requests = new RequestList(config.requests, config);
+		requests = new RequestList(config);
+	});
+
+	it('should allow an empty request list', () => {
+		requests = new RequestList();
+		expect(requests.list.length).toBe(0);
 	});
 
 	it('should load valid requests', () => {
@@ -49,12 +43,6 @@ describe('RequestList', () => {
 		requests.fetchDependencies(['get-posts']);
 	});
 
-	it('should load plugins', () => {
-		const pluginLessList = new RequestList();
-		expect(requests.modifiers.length).toBe(2);
-		expect(pluginLessList.modifiers.length).toBe(0);
-	});
-
 	it('should execute requests by alias.', async () => {
 		await expect(requests.execByAlias('user')).resolves.toMatchSnapshot();
 	});
@@ -83,6 +71,6 @@ describe('RequestList', () => {
 			}
 		});
 
-		expect(() => new RequestList(config.requests, config)).toThrow();
+		expect(() => new RequestList(config, config)).toThrow();
 	});
 });
diff --git a/src/beau.js b/src/beau.js
index b56f478..a49d3ac 100644
--- a/src/beau.js
+++ b/src/beau.js
@@ -4,8 +4,7 @@ const Config = require('./config');
 class Beau {
 	constructor(doc, env = {}) {
 		this.config = new Config(doc, env);
-
-		this.requests = new RequestList(this.config.requests, this.config);
+		this.requests = new RequestList(this.config);
 	}
 }
 
diff --git a/src/config.js b/src/config.js
index 330ac7a..62c60fa 100644
--- a/src/config.js
+++ b/src/config.js
@@ -1,5 +1,6 @@
 const deepMerge = require('deepmerge');
 const { requestRegex, UpperCaseKeys } = require('./shared');
+const Plugins = require('./plugins');
 
 class Config {
 	constructor(doc, env = {}) {
@@ -23,7 +24,7 @@ class Config {
 
 		this.ENVIRONMENT = deepMerge(this.ENVIRONMENT, env);
 
-		this.requests = [];
+		this.REQUESTS = [];
 
 		this.loadRequests(doc, {
 			DEFAULTS: this.DEFAULTS,
@@ -31,6 +32,8 @@ class Config {
 		});
 
 		this.loadHosts(this.HOSTS, config);
+
+		this.PLUGINS = new Plugins(this.PLUGINS);
 	}
 
 	loadHosts(hosts, rootConfig) {
@@ -77,7 +80,7 @@ class Config {
 				return deepMerge(defaults, request);
 			});
 
-		this.requests = this.requests.concat(requests);
+		this.REQUESTS = this.REQUESTS.concat(requests);
 	}
 
 	loadConfig(host) {
diff --git a/src/plugins.js b/src/plugins.js
new file mode 100644
index 0000000..9d288d7
--- /dev/null
+++ b/src/plugins.js
@@ -0,0 +1,92 @@
+const vm = require('vm');
+const requireg = require('requireg');
+const deepmerge = require('deepmerge');
+const { toKebabCase, dynamicValueRegex, replaceInObject } = require('./shared');
+
+class Plugins {
+	constructor(plugins = []) {
+		this.registry = {
+			preRequestModifiers: [],
+			postRequestModifiers: [],
+			dynamicValues: []
+		};
+
+		this.context = {};
+
+		plugins.forEach(plugin => this.loadPlugin(plugin));
+	}
+
+	loadPlugin(plugin) {
+		let name = plugin;
+		let settings = {};
+
+		if (typeof plugin === 'object') {
+			let keys = Object.keys(plugin);
+
+			if (keys.length !== 1) {
+				throw new Error(`Plugin items should contain only one key.`);
+			}
+
+			name = Object.keys(plugin)[0];
+			settings = plugin[name];
+		}
+
+		plugin = requireg(`./beau-${toKebabCase(name)}`);
+		new plugin(this, settings);
+	}
+
+	executeModifier(modifier, obj, orig) {
+		let result = deepmerge({}, obj);
+
+		this.registry[modifier].forEach(
+			modifier => (result = modifier(result, orig))
+		);
+
+		return result;
+	}
+
+	execPreRequestModifiers(request, originalRequest) {
+		return this.executeModifier(
+			'preRequestModifiers',
+			request,
+			originalRequest
+		);
+	}
+
+	execPostRequestModifiers(response, originalRequest) {
+		return this.executeModifier(
+			'postRequestModifiers',
+			response,
+			originalRequest
+		);
+	}
+
+	replaceDynamicValues(obj) {
+		return replaceInObject(obj, val => {
+			try {
+				return val.replace(dynamicValueRegex, (match, call) => {
+					return vm.runInContext(call, this.context);
+				});
+			} catch (e) {
+				throw new Error(`DynamicValue: ` + e);
+			}
+		});
+	}
+
+	addPreRequestModifier(modifier) {
+		this.registry.preRequestModifiers.push(modifier);
+	}
+
+	addPostRequestModifier(modifier) {
+		this.registry.postRequestModifiers.push(modifier);
+	}
+
+	defineDynamicValue(name, fn) {
+		this.registry.dynamicValues.push({ name, fn });
+		this.context[name] = fn;
+
+		vm.createContext(this.context);
+	}
+}
+
+module.exports = Plugins;
diff --git a/src/request.js b/src/request.js
index 033e885..576f886 100644
--- a/src/request.js
+++ b/src/request.js
@@ -1,4 +1,8 @@
 const request = require('request-promise-native');
+const RequestList = require('./requestList');
+const RequestCache = require('./requestCache');
+const Plugins = require('./plugins');
+
 const {
 	httpVerbs,
 	requestRegex,
@@ -6,12 +10,11 @@ const {
 	UpperCaseKeys,
 	removeOptionalKeys
 } = require('./shared');
-const RequestList = require('./requestList');
-const RequestCache = require('./requestCache');
 
 class Request {
-	constructor(req) {
+	constructor(req, plugins = new Plugins()) {
 		this.originalRequest = req;
+		this.plugins = plugins;
 
 		const {
 			REQUEST,
@@ -50,13 +53,15 @@ class Request {
 	}
 
 	findDependencies(request, set = new Set()) {
-		if (typeof request === 'object') {
-			const keys = Object.keys(request).filter(key => key !== 'ALIAS');
+		let type = typeof request;
 
-			keys.forEach(key => {
-				set = this.findDependencies(request[key], set);
-			});
-		} else if (typeof request === 'string') {
+		if (type === 'object') {
+			Object.keys(request)
+				.filter(key => key !== 'ALIAS')
+				.forEach(key => {
+					set = this.findDependencies(request[key], set);
+				});
+		} else if (type === 'string') {
 			const matches = request.match(replacementRegex) || [];
 			const deps = matches.map(m => m.split('.')[0].substring(1));
 
@@ -66,21 +71,22 @@ class Request {
 		return set;
 	}
 
-	async exec(modifiers = [], cache = new RequestCache()) {
-		const settings = {
-			endpoint: cache.parse(this.ENDPOINT),
+	async exec(cache = new RequestCache()) {
+		let settings = cache.parse({
+			endpoint: this.ENDPOINT,
 			method: this.VERB,
-			headers: cache.parse(this.HEADERS),
-			query: cache.parse(this.PARAMS),
-			payload: cache.parse(this.PAYLOAD)
-		};
-
-		modifiers.forEach(mod => {
-			if (typeof mod.preRequest !== 'undefined') {
-				mod.preRequest(settings, this.originalRequest);
-			}
+			headers: this.HEADERS,
+			query: this.PARAMS,
+			payload: this.PAYLOAD
 		});
 
+		settings = this.plugins.replaceDynamicValues(settings);
+
+		settings = this.plugins.execPreRequestModifiers(
+			settings,
+			this.originalRequest
+		);
+
 		try {
 			const response = await request(
 				removeOptionalKeys(
@@ -100,7 +106,7 @@ class Request {
 				)
 			);
 
-			const results = {
+			let results = {
 				request: {
 					headers: response.request.headers,
 					body: response.request.body,
@@ -114,11 +120,16 @@ class Request {
 				body: response.body
 			};
 
+			results = this.plugins.execPostRequestModifiers(
+				results,
+				this.originalRequest
+			);
+
 			cache.add(`$${this.ALIAS}`, results);
 
 			return results;
 		} catch ({ error }) {
-			throw new Error(error);
+			throw new Error(`Request Error: ` + error);
 		}
 	}
 }
diff --git a/src/requestCache.js b/src/requestCache.js
index d10f0b3..ec2b800 100644
--- a/src/requestCache.js
+++ b/src/requestCache.js
@@ -1,4 +1,4 @@
-const { replacementRegex } = require('./shared');
+const { replacementRegex, replaceInObject } = require('./shared');
 
 class RequestCache {
 	constructor() {
@@ -27,26 +27,13 @@ class RequestCache {
 	}
 
 	parse(item) {
-		let type = typeof item;
-
-		if (type === 'undefined') {
-			return {};
-		}
-
 		if (item === null) {
 			return null;
 		}
 
-		if (type === 'string') {
-			return item.replace(replacementRegex, key => this.get(key));
-		}
-
-		if (type === 'object') {
-			Object.keys(item).forEach(k => (item[k] = this.parse(item[k])));
-			return item;
-		}
-
-		return item;
+		return replaceInObject(item, item =>
+			item.replace(replacementRegex, key => this.get(key))
+		);
 	}
 }
 
diff --git a/src/requestList.js b/src/requestList.js
index 17583ed..ef497c8 100644
--- a/src/requestList.js
+++ b/src/requestList.js
@@ -1,14 +1,12 @@
 const Request = require('./request');
 const RequestCache = require('./requestCache');
 const httpVerbs = require('./shared').httpVerbs;
-const requireg = require('requireg');
 
 class RequestList {
-	constructor(requests = [], config = {}) {
+	constructor(config = { REQUESTS: [] }) {
 		this.config = config;
-		this.requests = requests;
+		this.REQUESTS = config.REQUESTS;
 
-		this.modifiers = this.loadPlugins();
 		this.list = this.loadRequests();
 		this.cache = new RequestCache();
 
@@ -17,7 +15,7 @@ class RequestList {
 
 	async execByAlias(alias) {
 		if (this.cache.exists(`$${alias}`)) {
-			return this.applyPostResponseModifiers(this.cache.get(`$${alias}`));
+			return this.cache.get(`$${alias}`);
 		}
 
 		const request = this.list.find(r => r.ALIAS === alias);
@@ -28,9 +26,8 @@ class RequestList {
 
 		try {
 			await this.fetchDependencies(Array.from(request.DEPENDENCIES));
-			const response = await request.exec(this.modifiers, this.cache);
-
-			return this.applyPostResponseModifiers(response);
+			const response = await request.exec(this.cache);
+			return response;
 		} catch (reason) {
 			throw new Error(
 				`Request: ${request.VERB} ${
@@ -49,10 +46,9 @@ class RequestList {
 
 	loadRequests() {
 		let requests = [];
-		this.requests.forEach(request => {
+		this.REQUESTS.forEach(request => {
 			try {
-				let r = new Request(request);
-				requests.push(r);
+				requests.push(new Request(request, this.config.PLUGINS));
 			} catch (e) {
 				throw new Error(`${request.request} was ignored: ${e}`);
 			}
@@ -60,34 +56,6 @@ class RequestList {
 
 		return requests;
 	}
-
-	loadPlugins() {
-		if (typeof this.config.PLUGINS === 'undefined') {
-			return [];
-		}
-
-		return this.config.PLUGINS.map(plugin => {
-			let name = plugin;
-			let settings = null;
-
-			if (typeof plugin === 'object') {
-				name = Object.keys(plugin)[0];
-				settings = plugin[name];
-			}
-
-			return new (requireg(name))(settings);
-		});
-	}
-
-	applyPostResponseModifiers(response) {
-		this.modifiers.forEach(mod => {
-			if (typeof mod.postResponse !== 'undefined') {
-				mod.postResponse(response);
-			}
-		});
-
-		return response;
-	}
 }
 
 module.exports = RequestList;
diff --git a/src/shared.js b/src/shared.js
index 58ece43..953b17b 100644
--- a/src/shared.js
+++ b/src/shared.js
@@ -11,7 +11,8 @@ const httpVerbs = [
 ];
 
 const requestRegex = new RegExp(`(${httpVerbs.join('|')})\\s(.*)`, 'i');
-const replacementRegex = /\$([a-zA-Z\.\d\-\_\/\\\:]*)/g;
+const replacementRegex = /\$([a-zA-Z\.\d\-\_\/\\\:]+)/g;
+const dynamicValueRegex = /\$\[(\w+\((?:.|[\n\r])+?\))\]/g;
 
 const UpperCaseKeys = function(obj) {
 	let result = {};
@@ -37,10 +38,43 @@ const removeOptionalKeys = function(obj, optionalValues) {
 	return result;
 };
 
+const toKebabCase = function(str) {
+	return str
+		.trim()
+		.replace(/([a-z])([A-Z])/g, '$1-$2')
+		.replace(/\s+/g, '-')
+		.toLowerCase();
+};
+
+const replaceInObject = function(obj, fn) {
+	if (obj === null) {
+		return null;
+	}
+
+	let type = typeof obj;
+
+	if (type === 'undefined') {
+		return {};
+	}
+
+	if (type === 'string') {
+		return fn(obj);
+	}
+
+	if (type === 'object') {
+		Object.keys(obj).forEach(k => (obj[k] = replaceInObject(obj[k], fn)));
+	}
+
+	return obj;
+};
+
 module.exports = {
 	httpVerbs,
 	requestRegex,
 	replacementRegex,
+	dynamicValueRegex,
 	UpperCaseKeys,
-	removeOptionalKeys
+	removeOptionalKeys,
+	toKebabCase,
+	replaceInObject
 };
diff --git a/yarn.lock b/yarn.lock
deleted file mode 100644
index a3d635d..0000000
--- a/yarn.lock
+++ /dev/null
@@ -1,2942 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-"@babel/code-frame@^7.0.0-beta.35":
-  version "7.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.0.0-beta.37.tgz#2da1dd3b1b57bfdea777ddc378df7cd12fe40171"
-  dependencies:
-    chalk "^2.0.0"
-    esutils "^2.0.2"
-    js-tokens "^3.0.0"
-
-"@types/node@*":
-  version "9.3.0"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-9.3.0.tgz#3a129cda7c4e5df2409702626892cb4b96546dd5"
-
-abab@^1.0.3:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/abab/-/abab-1.0.4.tgz#5faad9c2c07f60dd76770f71cf025b62a63cfd4e"
-
-abbrev@1:
-  version "1.0.9"
-  resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.0.9.tgz#91b4792588a7738c25f35dd6f63752a2f8776135"
-
-acorn-globals@^4.0.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/acorn-globals/-/acorn-globals-4.1.0.tgz#ab716025dbe17c54d3ef81d32ece2b2d99fe2538"
-  dependencies:
-    acorn "^5.0.0"
-
-acorn@^5.0.0, acorn@^5.1.2:
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.3.0.tgz#7446d39459c54fb49a80e6ee6478149b940ec822"
-
-ajv@^4.9.1:
-  version "4.11.8"
-  resolved "https://registry.yarnpkg.com/ajv/-/ajv-4.11.8.tgz#82ffb02b29e662ae53bdc20af15947706739c536"
-  dependencies:
-    co "^4.6.0"
-    json-stable-stringify "^1.0.1"
-
-ajv@^5.1.0:
-  version "5.5.2"
-  resolved "https://registry.yarnpkg.com/ajv/-/ajv-5.5.2.tgz#73b5eeca3fab653e3d3f9422b341ad42205dc965"
-  dependencies:
-    co "^4.6.0"
-    fast-deep-equal "^1.0.0"
-    fast-json-stable-stringify "^2.0.0"
-    json-schema-traverse "^0.3.0"
-
-align-text@^0.1.1, align-text@^0.1.3:
-  version "0.1.4"
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-  resolved "https://registry.yarnpkg.com/cliui/-/cliui-2.1.0.tgz#4b475760ff80264c762c3a1719032e91c7fea0d1"
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-    center-align "^0.1.1"
-    right-align "^0.1.1"
-    wordwrap "0.0.2"
-
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-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/cliui/-/cliui-3.2.0.tgz#120601537a916d29940f934da3b48d585a39213d"
-  dependencies:
-    string-width "^1.0.1"
-    strip-ansi "^3.0.1"
-    wrap-ansi "^2.0.0"
-
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-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/cliui/-/cliui-4.0.0.tgz#743d4650e05f36d1ed2575b59638d87322bfbbcc"
-  dependencies:
-    string-width "^2.1.1"
-    strip-ansi "^4.0.0"
-    wrap-ansi "^2.0.0"
-
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-  version "0.3.1"
-  resolved "https://registry.yarnpkg.com/clui/-/clui-0.3.1.tgz#013d082ce86ddbf060b86d3927f89ab8c33bf423"
-  dependencies:
-    cli-color "0.3.2"
-
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-  version "4.6.0"
-  resolved "https://registry.yarnpkg.com/co/-/co-4.6.0.tgz#6ea6bdf3d853ae54ccb8e47bfa0bf3f9031fb184"
-
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-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
-
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-  version "1.9.1"
-  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.1.tgz#c1261107aeb2f294ebffec9ed9ecad529a6097ed"
-  dependencies:
-    color-name "^1.1.1"
-
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-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
-
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-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.5.tgz#938370a57b4a51dea2c77c15d5c5fdf895164009"
-  dependencies:
-    delayed-stream "~1.0.0"
-
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-  version "2.12.2"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.12.2.tgz#0f5946c427ed9ec0d91a46bb9def53e54650e555"
-
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-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
-
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-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/console-control-strings/-/console-control-strings-1.1.0.tgz#3d7cf4464db6446ea644bf4b39507f9851008e8e"
-
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-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/content-type-parser/-/content-type-parser-1.0.1.tgz#c3e56988c53c65127fb46d4032a3a900246fdc94"
-
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-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.3.0.tgz#e9f3e9c6e2728efc2676696a70eb382f73106a67"
-
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-  version "1.5.1"
-  resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.5.1.tgz#b8278097b9bc229365de5c62cf5fcaed8b5599e5"
-
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-  version "2.4.1"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.4.1.tgz#4de911e667b0eae9124e34254b53aea6fc618d3e"
-
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-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
-
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-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
-  dependencies:
-    lru-cache "^4.0.1"
-    shebang-command "^1.2.0"
-    which "^1.2.9"
-
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-  version "2.0.5"
-  resolved "https://registry.yarnpkg.com/cryptiles/-/cryptiles-2.0.5.tgz#3bdfecdc608147c1c67202fa291e7dca59eaa3b8"
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-    boom "2.x.x"
-
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-  version "3.1.2"
-  resolved "https://registry.yarnpkg.com/cryptiles/-/cryptiles-3.1.2.tgz#a89fbb220f5ce25ec56e8c4aa8a4fd7b5b0d29fe"
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-    boom "5.x.x"
-
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-  version "0.3.1"
-  resolved "https://registry.yarnpkg.com/cssom/-/cssom-0.3.1.tgz#c9e37ef2490e64f6d1baa10fda852257082c25d3"
-
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-  version "0.3.2"
-  resolved "https://registry.yarnpkg.com/cssom/-/cssom-0.3.2.tgz#b8036170c79f07a90ff2f16e22284027a243848b"
-
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-  version "0.2.37"
-  resolved "https://registry.yarnpkg.com/cssstyle/-/cssstyle-0.2.37.tgz#541097234cb2513c83ceed3acddc27ff27987d54"
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-
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-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/d/-/d-0.1.1.tgz#da184c535d18d8ee7ba2aa229b914009fae11309"
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-    es5-ext "~0.10.2"
-
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-  version "1.14.1"
-  resolved "https://registry.yarnpkg.com/dashdash/-/dashdash-1.14.1.tgz#853cfa0f7cbe2fed5de20326b8dd581035f6e2f0"
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-    assert-plus "^1.0.0"
-
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-  version "2.3.3"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.3.3.tgz#40c453e67e6e13c901ddec317af8986cda9eff8c"
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-    ms "0.7.2"
-
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-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
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-    ms "2.0.0"
-
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-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
-
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-  version "0.2.11"
-  resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.2.11.tgz#7a16ba69729132340506170494bc83f7076fe08f"
-
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-  version "0.4.2"
-  resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.4.2.tgz#48b699c27e334bf89f10892be432f6e4c7d34a7f"
-
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-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
-
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-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-2.0.1.tgz#25c1c24f110fb914f80001b925264dd77f3f4312"
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-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/default-require-extensions/-/default-require-extensions-1.0.0.tgz#f37ea15d3e13ffd9b437d33e1a75b5fb97874cb8"
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-    strip-bom "^2.0.0"
-
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-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/define-properties/-/define-properties-1.1.2.tgz#83a73f2fea569898fb737193c8f873caf6d45c94"
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-    object-keys "^1.0.8"
-
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-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
-
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-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/delegates/-/delegates-1.0.0.tgz#84c6e159b81904fdca59a0ef44cd870d31250f9a"
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-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/detect-indent/-/detect-indent-4.0.0.tgz#f76d064352cdf43a1cb6ce619c4ee3a9475de208"
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-
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-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
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-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/detect-newline/-/detect-newline-2.1.0.tgz#f41f1c10be4b00e87b5f13da680759f2c5bfd3e2"
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-  version "3.4.0"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-3.4.0.tgz#b1d85507daf3964828de54b37d0d73ba67dda56c"
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-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/domexception/-/domexception-1.0.0.tgz#81fe5df81b3f057052cde3a9fa9bf536a85b9ab0"
-
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-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz#0fc73a9ed5f0d53c38193398523ef7e543777505"
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-    jsbn "~0.1.0"
-
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-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.0.tgz#e67b43f3e82c96ea3a584ffee0b9fc3325d802d9"
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-    is-arrayish "^0.2.1"
-
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-  version "1.10.0"
-  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.10.0.tgz#1ecb36c197842a00d8ee4c2dfd8646bb97d60864"
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-    has "^1.0.1"
-    is-callable "^1.1.3"
-    is-regex "^1.0.4"
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-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.1.1.tgz#45355248a88979034b6792e19bb81f2b7975dd0d"
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-  version "0.10.12"
-  resolved "https://registry.yarnpkg.com/es5-ext/-/es5-ext-0.10.12.tgz#aa84641d4db76b62abba5e45fd805ecbab140047"
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-  resolved "https://registry.yarnpkg.com/es6-iterator/-/es6-iterator-2.0.0.tgz#bd968567d61635e33c0b80727613c9cb4b096bac"
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-    es5-ext "^0.10.7"
-    es6-symbol "3"
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-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/es6-iterator/-/es6-iterator-0.1.3.tgz#d6f58b8c4fc413c249b4baa19768f8e4d7c8944e"
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-    d "~0.1.1"
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-    es6-symbol "~2.0.1"
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-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/es6-symbol/-/es6-symbol-3.1.0.tgz#94481c655e7a7cad82eba832d97d5433496d7ffa"
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-    es5-ext "~0.10.11"
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-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/es6-symbol/-/es6-symbol-2.0.1.tgz#761b5c67cfd4f1d18afb234f691d678682cb3bf3"
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-    es5-ext "~0.10.5"
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-  version "0.1.4"
-  resolved "https://registry.yarnpkg.com/es6-weak-map/-/es6-weak-map-0.1.4.tgz#706cef9e99aa236ba7766c239c8b9e286ea7d228"
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-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
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-  version "1.9.0"
-  resolved "https://registry.yarnpkg.com/escodegen/-/escodegen-1.9.0.tgz#9811a2f265dc1cd3894420ee3717064b632b8852"
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-  version "2.7.3"
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-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-4.2.0.tgz#0dee3fed31fcd469618ce7342099fc1afa0bdb13"
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-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
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-  resolved "https://registry.yarnpkg.com/event-emitter/-/event-emitter-0.3.4.tgz#8d63ddfb4cfe1fae3b32ca265c4c720222080bb5"
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-  version "0.2.0"
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-  version "0.7.0"
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-  version "2.0.0"
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-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
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-  version "4.17.2"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.2.tgz#34a3055babe04ce42467b607d700072c7ff6bf42"
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-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
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-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.3.0.tgz#6b26248c42f6d4fa4b0d8542f78edfcde35642a8"
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-
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-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-4.1.1.tgz#622e32e82488b49279114a4f9ecf45e7cd6bba55"
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-    yallist "^2.1.2"
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-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/lru-queue/-/lru-queue-0.1.0.tgz#2738bd9f0d3cf4f84490c5736c48699ac632cda3"
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-
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-  version "1.0.11"
-  resolved "https://registry.yarnpkg.com/makeerror/-/makeerror-1.0.11.tgz#e01a5c9109f2af79660e4e8b9587790184f5a96c"
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-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/mem/-/mem-1.1.0.tgz#5edd52b485ca1d900fe64895505399a0dfa45f76"
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-  version "0.3.10"
-  resolved "https://registry.yarnpkg.com/memoizee/-/memoizee-0.3.10.tgz#4eca0d8aed39ec9d017f4c5c2f2f6432f42e5c8f"
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-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/merge-stream/-/merge-stream-1.0.1.tgz#4041202d508a342ba00174008df0c251b8c135e1"
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-  resolved "https://registry.yarnpkg.com/merge/-/merge-1.2.0.tgz#7531e39d4949c281a66b8c5a6e0265e8b05894da"
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-  version "2.3.11"
-  resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-2.3.11.tgz#86677c97d1720b363431d04d0d15293bd38c1565"
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-  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.25.0.tgz#c18dbd7c73a5dbf6f44a024dc0d165a1e7b1c392"
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-  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.30.0.tgz#74c643da2dd9d6a45399963465b26d5ca7d71f01"
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-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.17.tgz#09d7a393f03e995a79f8af857b70a9e0ab16557a"
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-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.13.tgz#e07aaa9c6c6b9a7ca3012c69003ad25a39e92a88"
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-  version "3.0.3"
-  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.3.tgz#2a4e4090b96b2db06a9d7df01055a62a77c9b774"
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-  version "3.0.4"
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-  resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
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-  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
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-  version "0.7.2"
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-  version "2.0.0"
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-  version "2.8.0"
-  resolved "https://registry.yarnpkg.com/nan/-/nan-2.8.0.tgz#ed715f3fe9de02b57a5e6252d90a96675e1f085a"
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-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
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-  version "0.4.0"
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-  version "2.0.0"
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-  version "22.0.5"
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-  version "1.1.0"
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-symbol-tree@^3.2.1:
-  version "3.2.2"
-  resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.2.tgz#ae27db38f660a7ae2e1c3b7d1bc290819b8519e6"
-
-tar-pack@^3.4.0:
-  version "3.4.1"
-  resolved "https://registry.yarnpkg.com/tar-pack/-/tar-pack-3.4.1.tgz#e1dbc03a9b9d3ba07e896ad027317eb679a10a1f"
-  dependencies:
-    debug "^2.2.0"
-    fstream "^1.0.10"
-    fstream-ignore "^1.0.5"
-    once "^1.3.3"
-    readable-stream "^2.1.4"
-    rimraf "^2.5.1"
-    tar "^2.2.1"
-    uid-number "^0.0.6"
-
-tar@^2.2.1:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/tar/-/tar-2.2.1.tgz#8e4d2a256c0e2185c6b18ad694aec968b83cb1d1"
-  dependencies:
-    block-stream "*"
-    fstream "^1.0.2"
-    inherits "2"
-
-test-exclude@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-4.1.1.tgz#4d84964b0966b0087ecc334a2ce002d3d9341e26"
-  dependencies:
-    arrify "^1.0.1"
-    micromatch "^2.3.11"
-    object-assign "^4.1.0"
-    read-pkg-up "^1.0.1"
-    require-main-filename "^1.0.1"
-
-throat@^4.0.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/throat/-/throat-4.1.0.tgz#89037cbc92c56ab18926e6ba4cbb200e15672a6a"
-
-timers-ext@0.1, timers-ext@0.1.x:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/timers-ext/-/timers-ext-0.1.0.tgz#00345a2ca93089d1251322054389d263e27b77e2"
-  dependencies:
-    es5-ext "~0.10.2"
-    next-tick "~0.2.2"
-
-tmpl@1.0.x:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/tmpl/-/tmpl-1.0.4.tgz#23640dd7b42d00433911140820e5cf440e521dd1"
-
-to-fast-properties@^1.0.1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.2.tgz#f3f5c0c3ba7299a7ef99427e44633257ade43320"
-
-tough-cookie@>=2.3.3, tough-cookie@^2.3.3, tough-cookie@~2.3.3:
-  version "2.3.3"
-  resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.3.tgz#0b618a5565b6dea90bf3425d04d55edc475a7561"
-  dependencies:
-    punycode "^1.4.1"
-
-tough-cookie@~2.3.0:
-  version "2.3.2"
-  resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.2.tgz#f081f76e4c85720e6c37a5faced737150d84072a"
-  dependencies:
-    punycode "^1.4.1"
-
-tr46@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/tr46/-/tr46-1.0.1.tgz#a8b13fd6bfd2489519674ccde55ba3693b706d09"
-  dependencies:
-    punycode "^2.1.0"
-
-tunnel-agent@^0.6.0:
-  version "0.6.0"
-  resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.6.0.tgz#27a5dea06b36b04a0a9966774b290868f0fc40fd"
-  dependencies:
-    safe-buffer "^5.0.1"
-
-tweetnacl@^0.14.3, tweetnacl@~0.14.0:
-  version "0.14.3"
-  resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.3.tgz#3da382f670f25ded78d7b3d1792119bca0b7132d"
-
-type-check@~0.3.2:
-  version "0.3.2"
-  resolved "https://registry.yarnpkg.com/type-check/-/type-check-0.3.2.tgz#5884cab512cf1d355e3fb784f30804b2b520db72"
-  dependencies:
-    prelude-ls "~1.1.2"
-
-uglify-js@^2.6:
-  version "2.7.5"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-2.7.5.tgz#4612c0c7baaee2ba7c487de4904ae122079f2ca8"
-  dependencies:
-    async "~0.2.6"
-    source-map "~0.5.1"
-    uglify-to-browserify "~1.0.0"
-    yargs "~3.10.0"
-
-uglify-to-browserify@~1.0.0:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/uglify-to-browserify/-/uglify-to-browserify-1.0.2.tgz#6e0924d6bda6b5afe349e39a6d632850a0f882b7"
-
-uid-number@^0.0.6:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/uid-number/-/uid-number-0.0.6.tgz#0ea10e8035e8eb5b8e4449f06da1c730663baa81"
-
-util-deprecate@~1.0.1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
-
-util.promisify@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/util.promisify/-/util.promisify-1.0.0.tgz#440f7165a459c9a16dc145eb8e72f35687097030"
-  dependencies:
-    define-properties "^1.1.2"
-    object.getownpropertydescriptors "^2.0.3"
-
-uuid@^3.0.0, uuid@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.1.0.tgz#3dd3d3e790abc24d7b0d3a034ffababe28ebbc04"
-
-validate-npm-package-license@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.1.tgz#2804babe712ad3379459acfbe24746ab2c303fbc"
-  dependencies:
-    spdx-correct "~1.0.0"
-    spdx-expression-parse "~1.0.0"
-
-verror@1.3.6:
-  version "1.3.6"
-  resolved "https://registry.yarnpkg.com/verror/-/verror-1.3.6.tgz#cff5df12946d297d2baaefaa2689e25be01c005c"
-  dependencies:
-    extsprintf "1.0.2"
-
-walker@~1.0.5:
-  version "1.0.7"
-  resolved "https://registry.yarnpkg.com/walker/-/walker-1.0.7.tgz#2f7f9b8fd10d677262b18a884e28d19618e028fb"
-  dependencies:
-    makeerror "1.0.x"
-
-watch@~0.18.0:
-  version "0.18.0"
-  resolved "https://registry.yarnpkg.com/watch/-/watch-0.18.0.tgz#28095476c6df7c90c963138990c0a5423eb4b986"
-  dependencies:
-    exec-sh "^0.2.0"
-    minimist "^1.2.0"
-
-webidl-conversions@^4.0.1, webidl-conversions@^4.0.2:
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
-
-whatwg-encoding@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/whatwg-encoding/-/whatwg-encoding-1.0.1.tgz#3c6c451a198ee7aec55b1ec61d0920c67801a5f4"
-  dependencies:
-    iconv-lite "0.4.13"
-
-whatwg-url@^6.3.0:
-  version "6.4.0"
-  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-6.4.0.tgz#08fdf2b9e872783a7a1f6216260a1d66cc722e08"
-  dependencies:
-    lodash.sortby "^4.7.0"
-    tr46 "^1.0.0"
-    webidl-conversions "^4.0.1"
-
-which-module@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/which-module/-/which-module-1.0.0.tgz#bba63ca861948994ff307736089e3b96026c2a4f"
-
-which-module@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
-
-which@^1.2.12, which@^1.2.9:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/which/-/which-1.3.0.tgz#ff04bdfc010ee547d780bec38e1ac1c2777d253a"
-  dependencies:
-    isexe "^2.0.0"
-
-wide-align@^1.1.0:
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/wide-align/-/wide-align-1.1.2.tgz#571e0f1b0604636ebc0dfc21b0339bbe31341710"
-  dependencies:
-    string-width "^1.0.2"
-
-window-size@0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.1.0.tgz#5438cd2ea93b202efa3a19fe8887aee7c94f9c9d"
-
-window-size@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.2.0.tgz#b4315bb4214a3d7058ebeee892e13fa24d98b075"
-
-wordwrap@0.0.2:
-  version "0.0.2"
-  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-0.0.2.tgz#b79669bb42ecb409f83d583cad52ca17eaa1643f"
-
-wordwrap@~0.0.2:
-  version "0.0.3"
-  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-0.0.3.tgz#a3d5da6cd5c0bc0008d37234bbaf1bed63059107"
-
-wordwrap@~1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz#27584810891456a4171c8d0226441ade90cbcaeb"
-
-wrap-ansi@^2.0.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-2.1.0.tgz#d8fc3d284dd05794fe84973caecdd1cf824fdd85"
-  dependencies:
-    string-width "^1.0.1"
-    strip-ansi "^3.0.1"
-
-wrappy@1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
-
-write-file-atomic@^2.1.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/write-file-atomic/-/write-file-atomic-2.3.0.tgz#1ff61575c2e2a4e8e510d6fa4e243cce183999ab"
-  dependencies:
-    graceful-fs "^4.1.11"
-    imurmurhash "^0.1.4"
-    signal-exit "^3.0.2"
-
-xml-name-validator@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-2.0.1.tgz#4d8b8f1eccd3419aa362061becef515e1e559635"
-
-y18n@^3.2.1:
-  version "3.2.1"
-  resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
-
-yallist@^2.1.2:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/yallist/-/yallist-2.1.2.tgz#1c11f9218f076089a47dd512f93c6699a6a81d52"
-
-yargs-parser@^2.4.1:
-  version "2.4.1"
-  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-2.4.1.tgz#85568de3cf150ff49fa51825f03a8c880ddcc5c4"
-  dependencies:
-    camelcase "^3.0.0"
-    lodash.assign "^4.0.6"
-
-yargs-parser@^8.1.0:
-  version "8.1.0"
-  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-8.1.0.tgz#f1376a33b6629a5d063782944da732631e966950"
-  dependencies:
-    camelcase "^4.1.0"
-
-yargs@^10.0.3:
-  version "10.1.1"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-10.1.1.tgz#5fe1ea306985a099b33492001fa19a1e61efe285"
-  dependencies:
-    cliui "^4.0.0"
-    decamelize "^1.1.1"
-    find-up "^2.1.0"
-    get-caller-file "^1.0.1"
-    os-locale "^2.0.0"
-    require-directory "^2.1.1"
-    require-main-filename "^1.0.1"
-    set-blocking "^2.0.0"
-    string-width "^2.0.0"
-    which-module "^2.0.0"
-    y18n "^3.2.1"
-    yargs-parser "^8.1.0"
-
-yargs@^4.8.0:
-  version "4.8.1"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-4.8.1.tgz#c0c42924ca4aaa6b0e6da1739dfb216439f9ddc0"
-  dependencies:
-    cliui "^3.2.0"
-    decamelize "^1.1.1"
-    get-caller-file "^1.0.1"
-    lodash.assign "^4.0.3"
-    os-locale "^1.4.0"
-    read-pkg-up "^1.0.1"
-    require-directory "^2.1.1"
-    require-main-filename "^1.0.1"
-    set-blocking "^2.0.0"
-    string-width "^1.0.1"
-    which-module "^1.0.0"
-    window-size "^0.2.0"
-    y18n "^3.2.1"
-    yargs-parser "^2.4.1"
-
-yargs@~3.10.0:
-  version "3.10.0"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-3.10.0.tgz#f7ee7bd857dd7c1d2d38c0e74efbd681d1431fd1"
-  dependencies:
-    camelcase "^1.0.2"
-    cliui "^2.1.0"
-    decamelize "^1.0.0"
-    window-size "0.1.0"