Merge pull request #1056 from photonstorm/dev

Fixed jsdocs for the Convolution Filter.
CanvasMask patch

rect/elip and circ are not defined by points but pixi standard objects.
Update CanvasGraphics.js
Merge pull request #1057 from SebastianNette/patch-3

canvas mask patch
getBounds tweak

removed some unused code
rounded rect fix
rounded rect fix
rounded rect fix
Fixing issue #1021 Inconsistent Text Positioning across different browsers
Merge pull request #1062 from EricLesch/dev

Fixing issue #1021 Inconsistent Text Positioning across different browse...
Merge pull request #1059 from SebastianNette/patch-3

Fix for rounded rectangles
Fixed CanvasBuffer @method error other small jsdoc enhancements.