mask() as a proper name for a method
remove unneeded rect() method, improve bounds() method to return object
trying to use object bounds for mask canvas size
add myBounds method to find object exclusive bounds + remove dimen() method completely
temporarily disable collisions module
fix mistypes
use scale to find mask canvas bounds
easy masks are working
moving masks are working
Element -> applyPivot, applyReg, applyVisuals, fullTransform, fullInvTransform
what seems to be a fix (use inverted .reg & .pivot) + some clarifying comments
fix text bounds calculation
fix rotate tween
all simple masks work for the squares/stars test
Merge pull request #220 from Animatron/masks

Masks for first-level shapes are back for new API.