## Link to GitHub Issue or related Pull Request, if one exists
#574
## Description of change
Refactor so that grouping of lights are in common I/O code. Add this to
IIDX/SDVX/DDR/GitaDora.
## Testing
## Link to GitHub Issue, if one exists
n/a
## Description of change
Before this PR, drums were in the order they appear in test menu.
This is really confusing. Change it so that they appear in the order
they do in default drummania layout.
## Testing
validated manually in gw
## Link to GitHub Issue, if one exists
Fixes#512
## Description of change
Fix digital wailing not being recognized consistently.
Also address the fact that wailing was completely broken when lefty mode
was on. This requires a new option that the user needs to check off in
the configurator since we can't magically guess if the user is holding
the guitar in lefty mode.
- [x] fix downward wail
- [x] digital lefty mode
- [x] implement all of this for arena model i/o
- [x] test dx cab 2p
- [x] lefty toggle in overlay
- [x] fix analog not working for 2p guitar
- [ ] analog lefty mode?
## Testing
Checked GW and GW Delta
## Link to GitHub Issue, if one exists
#477
## Description of change
Add lights for J region cab. I can't figure out how the extra lights on
U region cab are wired up.
## Testing
Tested guitar and drums, J and U regions.
## Link to GitHub Issue, if one exists
#477
## Description of change
Plumb through headphone jack detection. Touch screen menu for headphone
volume lights up.
## Testing
Tested guitar.
bicarus