remove grunt-contrib-watch
bump to v1.5.1, add new builds
Fixed TilingSprite not render children on canvas

TilingSprite does not render children on 2d canvas. The call to
children's renderCanvas method is missing.
InteractionManager now traverses in reverse when looking for a hit-test. This produces more accurate results with layered containers.
Adding grunt-watch into Gruntfile and package.json. watch uses source maps for development
Merge pull request #631 from mattdesl/grunt-watch

Grunt Watch to use concat_sourcemap
Fixed AssetLoader undefined evt.loader
Merge pull request #632 from ekelokorpi/dev

Fixed AssetLoader undefined evt.loader
Merge pull request #630 from mattdesl/interactionmanager-fix

InteractionManager hit test now checks bottom-to-top
@param doc about scaleMode in Texture.fromImage
@param doc about scaleMode in Texture.fromCanvas
Added doc for BaseTexture.fromCanvas
Merge pull request #638 from jeena/master

Added missing documentation for a method and two params
Fixed bug where hitArea was being checked after the children hitTest
collecting interactive sprites should not happen in reverse
Merge pull request #644 from mattdesl/bugfix-641

Bug fix: Siblings' event priority
update karma version
update karma *again* to latest v0.12
Fix Text.destroy() and fix memory leak in BaseTexture.destroy() if basetexture was from canvas
Added optional FilterArea to displayObject (for optimisation)

Reverted interaction manager (for now) as not working as expected (no
bubbling)