- Fix timeout and debugging string
- Fix check for whether `LCD_TIMEOUT_TO_STATUS` is valid
- Fix incorrect debugging message
- Make capitalization of callbacks consistent.
- Allow Touch UI to use hardware SPI on Einsy boards
- Move print stats to About Printer page.
- More generic about screen with GPL license.
- Add missing handler for power loss event
- Less code duplication on status screen and main/advanced menu; more legible
- Reorganize advanced and main menu to add more features
- Hide home Z button when using Z_SAFE_HOMING
- Fix compilation errors when certain features enabled
- Fix missing labels in UI
- Improve color scheme
- Add new preheat menus
- Fix incorrect rendering of Marlin logo on boot
- Add Level X Axis and Auto calibrate buttons

- Put 'D' before other params for clean exit.
- Use serial on/off for debug status.

M303 D will now toggle activation of PID_DEBUG output.   This allows the debug capability to be built into the firmware, but turned on and off as needed.