more specific RGB int type; numpy input decorator
more specific RGB int type; numpy input decorator

* rgb ints are ALWAYS uint8 from now on; no longer checking for the broad np.integer
* added decorator to convert non-numpy things to arrays (e.g. lists like [r, g, b])

TadLeonard/husl-numpy,TadLeonard/husl-numpy,TadLeonard/husl-numpy