lib update

- current state class implementation of the Score & Controller
interface.
- test version of a
- EmbedGui to simplify preset management and autogui generation based
on the SynthDesc object and SynthDef metadata file management.
- Various test preset management gui's
- A current state of a polyrhythmical sequencer that can be totally
specified by the script/user composer.
- Various new gui objects
- SynthDesc class extension that solves a bug with metadata file
management.
- Various uttilities
- A lot more 'houtje touwtje' code