melonJS 4.0.0

• Audio : updated to the latest Howler 2.0.1 version
• Container : added a 'forEach' function that allows to iterate through all children
• Core : largely improved and completed the matrix implementation and usage
• Core : Object.assign polyfill update
• Core : various improvements and fixes to jasmine test units
• Debug : fixed the debug panel display when using the WebGL renderer
• Font : added true support for bitmap font generated out of true type fonts (e.g. Littera, bmfont, bmglypgh, etc...)
• Particles : reduced creation/use of temporary (vector) objects
• Pointer : fixed bug with Chrome on Windows touch devices where touch input would register, but mouse input would not. (credit to BrianRosamilia)
• Pointer : PointerEvent detection is now fully W3C compliant
• Pointer : automaticaly free any defined region if there is no callback left
• Renderable : added a new currentTransform property that defines the renderable transformation matrix
• Renderable : transformations can now be automatically applied through the autoTransform flag (off by default for user-defined objects)
• Renderable : me.AnimationSheet has been merged into me.Sprite (me.AnimationSheet is now only an alias), and rendering function simplified
• Renderable : fixed image layer first update, when added to a child container (and not directly the root one)
• Renderer : simplified/aligned both the Canvas and WebGL renderer API in a more WebGL fashion
• Renderer : added a subPixel rendering option (off by default)
• Shapes : polygon based shapes can now be freely transformed, and bounding box will be resized accordingly
• TMX : scaling and rotation can now be applied to a tilemap (see me.levelDirector.loadLevel() for example)
• TMX : fixed some issues when loading TMX level into a child container.
• WebGLRenderer : fixed the currentColor alpha not taking in account the "globalAlpha" (now better match canvas renderer)