Warning will be thrown if setVal() request is outside of mix/max range for the Characteristic, though min/max range not yet modified by SpanRange().
TO DO: Create new Characteristic methods setRange(typename T_MIN, typename T_MAX) and setRange(typename T_MIN, typename T_MAX, typename T_STEP) that will reset min/max, or min/max/step, and trigger required output in database. Add in checks to ensure setRange is NOT used to STRING or BOOLEAN. Also add check to ensure STEP is always>0. Add new UVAL for STEP that is normally zero, which indicates NO step size has been set (and does not need to be reported to database). Then, set warnings about SpanRange being deprecated at some point in the future.
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