Convert all string references from const char* to String/F() to store values in flash instead of ram.
Memory usage from `main`:
```
Sketch uses 27878 bytes (90%) of program storage space. Maximum is 30720 bytes.
Global variables use 1755 bytes (85%) of dynamic memory, leaving 293 bytes for local variables. Maximum is 2048 bytes.
```
Memory usage after these changes:
```
Sketch uses 28054 bytes (91%) of program storage space. Maximum is 30720 bytes.
Global variables use 1445 bytes (70%) of dynamic memory, leaving 603 bytes for local variables. Maximum is 2048 bytes.
```
This provides a dynamic memory savings of 310 bytes!
Reviewed-on: https://git.pinkduck.xyz/adam/libGravity/pulls/8
Co-authored-by: Adam Wonak <adam.wonak@gmail.com>
Co-committed-by: Adam Wonak <adam.wonak@gmail.com>
Select swing amount from a percentage range of the beat starting a 50% (unchanged) to a max swing amount of 95% (about 1/32nd note before end of period). Swing percentage shows an indicator marker when the percentage lines up with a quantized note on the grid.
This is probably going to be the last feature because it is pushing up against the limits of available dynamic memory.
Out of scope changes:
- selecting parameters / values no longer wraps
- reduce dynamic memory used in processClockTick
- various readability formatting
Reviewed-on: https://git.pinkduck.xyz/adam/libGravity/pulls/7
Co-authored-by: Adam Wonak <adam.wonak@gmail.com>
Co-committed-by: Adam Wonak <adam.wonak@gmail.com>
