Added new features, killed bugs

Squashed several bugs that were causing issues with non fatal errors.
- movie clips when updated have to be set to loop again. this action
must be delayed until the clip is loaded into memory.

some index out of bounds issues were occurring while +1'ing the
iterator, this has been remedied as well with constraints.

- led array data in rgb2led was being passed around through various
variables in incorrect data types. fixed.

- Blending happens on screen preview as well as in pixel data correctly.