You can now safely destroy a Group and the 'destroyChildren' boolean will propogate fully down the display list.
Calling destroy on an already destroyed object would throw a run-time error. Now checked for and aborted.
Calling destroy while in an Input Event callback now works for either the parent Group or the calling object itself.
In Group.destroy the default for 'destroyChildren' was false. It's now `true` as this is a far more likely requirement when destroying a Group.
All GameObjects now have a 'destroyChildren' boolean as a parameter to their destroy method. It's default is true and the value propogates down its children.
You can now create a Physics Body directly via game.physics.createBody(), and Body has been updated so it's no longer always bound to a Sprite.
Debug.renderPhysicsBody now works with Rectangles, Lines and multiple Convex shapes.
Starting to get the Tiled polyline parsing working nicely. Not too far off a complete tilemap collision.
