Merge pull request #136 from LoomSDK/BJG-FixAlphaClamping

Clamp alpha from 0 to 1 for DisplayObject and friends.
Fixed some Nits before landing
Merge branch 'LFL-Quad-And-Rendering-Additions' of github.com:24BitGames/LoomSDK into LFL-Quad-And-Rendering-Additions
Merge commit '00efde54b4c53369aae8461146d88581b5ade1b4' into LFL-Quad-And-Rendering-Additions