fixed a bug with incorrect handling of the BACK button/gesture

bug fixes

* new option - Hold; if enabled, notes will play endlessly without reacting to key release (noteOff) events; turning the note on again works like turning it off; there are two ways to enable this option:
  1) using the Hold parameter in the "MIDI Mapping" window;
  2) by pressing the HOLD button, which appears in place of LCK while playing the musical keyboard: press HOLD, release the desired notes - then the released notes will continue to play;
* additional highlighting of locked samples;
* bug fixes.

* auto-repeat in the virtual (on-screen) text keyboard;
* bug fixes.

v1.1b: bug fixes.
v1.1:
* new parameters (can be linked to MIDI or used directly in AU hosts):
  * Algorithm: fractal sample (default), fractal spectrum, FM, random; increases number of unique sounds to 12 billion;
  * Previous code;
  * Next code.

* new parameters (can be linked to MIDI or used directly in AU hosts):
  * Algorithm: fractal sample (default), fractal spectrum, FM, random; increases number of unique sounds to 12 billion;
  * Previous code;
  * Next code;
* bug fixes.

bug fixes

* additional export/import functions provided by the system; this simplifies file sharing between the standalone version and AU;
* bug fixes.

bug fixes.