added in option for volume in playTrack
merged upstream 0.9.7
Merge branch 'master' of github.com:/obiot/melonJS
Merge branch 'master' of github.com:melonjs/melonJS
Merge branch 'master' of github.com:melonjs/melonJS
added in error checking if the width or height is 0, and there is no backBufferCanvas
added in alias methods for the buffered canvas. So the api is more intuitive
Merge branch 'master' of github.com:agmcleod/melonJS
removed alias methods per discussion
added in ability to load cocoons screencanvas or html5 canavas
Merge branch 'master' of github.com:melonjs/melonJS
Isometric to Orthogonal Coords

Isometric to Orthogonal position change for objects
Update me.Vector2d methods to return a reference to `this` for method chaining.

Example:
var vec = new me.Vector2d(
    Math.cos(Math.PI / 4),
    Math.sin(Math.PI / 4)
).scale(new me.Vector2d(16, 16)).floorSelf().negateSelf();

- Creates a new unit vector at 45 degrees.
- Scales the vector to 16 units.
- Floors the product.
- Negates the result.
Update me.Vector2d methods to return a reference to `this` for method chaining.

Example:
var vec = new me.Vector2d(
    Math.cos(Math.PI / 4),
    Math.sin(Math.PI / 4)
).scale(new me.Vector2d(16, 16)).floorSelf().negateSelf();

- Creates a new unit vector at 45 degrees.
- Scales the vector to 16 units.
- Floors the product.
- Negates the result.
Update collision_test example to use full playfield.

- A gap around the screen edges was introduced when the entity size was changed.
Update collision_test example to use full playfield.

- A gap around the screen edges was introduced when the entity size was changed.
also unload atlas resources when calling `unloading()`
[#195] allows changing the imageLayer default origin point using the anchorPoint
[#195] fixed position calculation to match with "renderable within entity"  implementation

Default anchor point is however `(0,0)` to match with Tiled
implementation, while default anchor point for renderable is `(0.5,
0.5)`
[#167] use grunt for the build system

first pass update (time for lunch!) and currently broken.
(based on the grunt_config file initially provided by bsparks)