[#387] fixed the way `mixin` is declared, so that it does not show up as a property
[#387] fixed the way `mixin` is declared, so that it does not show up as a property

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