[#369] added a `setShape()` function to change the current shape, and other small improvements/fixes
[#369] added a `setShape()` function to change the current shape, and other small improvements/fixes

note that currently we anyway only support one shape... but at least
it's there :)

gopalindians/melonJS,MarkoIvanetic/melonJS,melonjs/melonJS,srbala/melonJS,gopalindians/melonJS,TukekeSoft/melonJS,rlugojr/melonJS,gopalindians/melonJS,melonjs/melonJS,rlugojr/melonJS,TukekeSoft/melonJS,TukekeSoft/melonJS,srbala/melonJS,srbala/melonJS,MarkoIvanetic/melonJS,rlugojr/melonJS