melonJS 4.1.1

• Core : fixed a bug in Number.prototype.round()
• Core : throw an exception when attempting to add an invalid state in me.state.set()
• Core : fixed falling and jumping flags on me.Body when gravity is reversed
• Geometry : fixed a bug in me.Vector3d.abs()
• Geometry : added a new me.Matrix2d.multiplyVectorInverse() method
• Pointer : fixed touchstart events
• Pointer : replaced non-standard mousewheel with W3C standard wheel events
• Pointer : fixed duplicate wheel events