Color experiment

## Vectr.Shape
* Simplified shadows - only have to specify a size now; also renamed variable to "glow," as that's what the shadow is used for
* "colors" is an object with RGBA values, "color" is now a getter/setter for that obj

## Vectr.Game
* Fixed Firefox scaling
* Firefox button issues also seem to be fixed
* Moved version out of source and into package.json