Add rewindPick to animate() and fix color animations in series and loopPick

Requests
1

It would be great to animate to a set of colors but series does not work with colors you have to keep using a call which will reset the colorRange(). And it does not work with loopPick either - it just does the same color combo.

Even if it did work with loopPick, it would not be right as it would animate to a color then jump to a different color then animate to a color, etc. We need to animate to a color then rewind to a different color then go forward to another color, rewind to a different color, etc. So we would need a rewindPick that would rewind to a new picked color. And we would need it to work with colors.

2

Also, setting loopPick or rewindPick true should automatically set loop or rewind true.

3

These are done now and added to the https://zimjs.com/updates.html page.

See https://codepen.io/zimjs/pen/xbGoEZx for an example.