replacement for fastled sqrt16() #4426
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- replacement for fastled, it is about 10% slower for numbers smaller 128 but faster for larger numbers. speed difference is irrelevant to WLED but it saves some flash.
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replacing yet another fastled function: it is about 10% slower for numbers smaller 128 but faster for larger numbers. Speed difference is irrelevant to WLED (we are talking 30ns slower per call on a C3) but it saves some flash and takes us one step closer to ditching fastled.