New features, more control, performance+bug-fixes

-Added button for turning floppy bounce(physics collision) on/off, so we can let balls go through.

-Can now pick up and move/throw more stuff.

-Added Gain slider for entire channels, attached to speakers.

-Massive performance boost after some refactoring and lots of little tricks.

-Lots of tweaks and bug-fixes. Other stuff..I forget.