Personal opinion: being able to change the format in the GUI,
but not the fingering, felt misleading.
I think the user should either be directed to the Fingering.js file
or we should have a complete editor of fingerings in the GUI.
Since adding more elements to the GUI would be a lot of work,
I opted for the first option.
- Removed all references to the format string and preview window
- Also fixed some wordings/indentation
This allows the user to modify the instruments,
without understanding the code.
Some documentation is included,
and a lot of names are changed to be closer to the domain.
Remove "+" symbol, since we don't need it for recorders
Change symbols used to be slightly more intuitive than digits
Change a lot of the defaults
and other minor tweaks
