* Fix for issue #424 create a build script to check out the correct versions of sub libraries.
* Initial attempt at supporting loading SysEx files from subdirectories which seems to speed up loading significantly.
* Reinstate headerless SysEx file loading after subdirectory change
* Limit nesting of subdirectories to open
* Fix bank number in UI to match the numbers from the bank files.
* Update to fix bank numbers. Bank file numbers now start from 00001 and show as 1-indexed in the UI. But internally and via MIDI are still 0-indexed as per MIDI spec.
Kevin