- fixed issues with three-stats element, now all in the html file of
the element
 * updated its api with the updatable flag, so it gets updated
automatically by the main update method
- improvement post processing elements:
 * added better handling of effects & their initialization
 * composer now has a renderTarget attribute (accessible)
 * removed unused clutter code
 * added support for sub composers inside composers
 * fixed issues with effects list initialization (now done in the
created() callback)
-removed some logging output
- fixed issue with background of 3d view not set from the css property
- added support for sub composers (post fx)
 * work in progress, still some hardwired things
- reduced logging verbosity
- removed clutter and minor cleanups