Mainly bugfixes and robustness in this one.
- Improved robustness for loading WAV/AIFF/Soundfonts/FXB
- Added drag&drop of banks
- Improvements and fixes to soundfont import
- Fixed failure to load FXB/programs with splits without assigned waves
- Fixed crash when loading WAV with trailing junk data
- Fixed AEG:level1 and glide parameter not loaded/saved correctly
- Fixed XSD typos
- Fixed AIFF files loaded as "unknown"
- Fixed not detecting need to rename+resave waves
- Fixed Soundfont drag&drop not working correctly
- Fixed UI refresh when deleting last program