Various fixes and improvements (#269)

- Bump version for next release
- Fix default gamma for CYD 2432S032C
- Remember gamma curve setting from Display settings app
- Add UART to Core2 (still has no voltage on Grove port, though)
- LVGL performance improvements: pin to second core and set task priority to "critical"
- Fix build warnings, including deprecations
- Removed deprecated `Thread` constructor
- Fix WaveShare S3 display: Some displays would show a white screen at 12MHz, so I'm putting it back to the
official config values.

Documentation/ideas.md

@@ -1,4 +1,8 @@
 # TODOs
+
+- Add a Keyboard setting app to override the behaviour of soft keyboard hiding (e.g. keyboard hardware is present, but user wants soft keyboard)
+- HAL for display touch calibration
+- Display app: hide controls for unsupported features, instead of disabling them
 - Split up boot stages, so the last stage can be done from the splash screen
 - Start using non_null (either via MS GSL, or custom)
 - `hal/Configuration.h` defines C function types: Use C++ std::function instead
@@ -38,6 +42,7 @@
 - Remove flex_flow from app_container in Gui.cpp
 
 # Nice-to-haves
+
 - Give external app a different icon. Allow an external app update their id, icon, type and name once they are running(and persist that info?). Loader will need to be able to find app by (external) location.
 - Audio player app
 - Audio recording app
@@ -52,8 +57,9 @@
 - Files app: copy/paste actions
 - On crash, try to save current log to flash or SD card? (this is risky, though, so ask in Discord first)
 - Support more than 1 hardware keyboard (see lvgl::hardware_keyboard_set_indev()). LVGL init currently calls keyboard init, but that part should probably be done from the KeyboardDevice base class.
- 
+
 # App Ideas
+
 - Map widget:
   https://github.com/portapack-mayhem/mayhem-firmware/blob/b66d8b1aa178d8a9cd06436fea788d5d58cb4c8d/firmware/application/ui/ui_geomap.cpp
   https://github.com/portapack-mayhem/mayhem-firmware/blob/b66d8b1aa178d8a9cd06436fea788d5d58cb4c8d/firmware/tools/generate_world_map.bin.py