Bug with Size and ANIMATIONTYPE_SIZE

Using last version from git.

in Animation.animate(..):

case Animation.ANIMATIONTYPE_SIZE:
    this._offsetsCache[keyOffset] = toValue.subtract(fromValue);

but there is typo in Size:

public substract(otherSize: Size): Size {

so Animation.animate can't find method, and produces error "_.subtract is not a function"