DTS modules (device modules) often have a single source file with an empty `struct Module`.
The module's yaml file now allows a `dts-only` boolean to be set, so the source file becomes optional.
`devicetree.yaml` is renamed everywhere to `module.yaml`
app-module:
- Implement `AppStartContext` to reduce amount of `app_start_` and `app_exec` functions: replace them with `app_start_with_context()`
- Add support for environment variables when starting apps
- Implement support for environment variables for apps
graphics-module:
- Add this new module
- Move font-module code into this module
- Implement pixel_buffer
apps:
- Terminal app: reduce memory usage by only buffering a single row of characters, and try to buffer in IRAM when possible. Implement new pixel_buffer.
- App List: Mark apps as favourite to pin them on top. Use touch or press "x" key.
- App List: Add toolbar button that shows alert dialog with info about using favourites
- CL-32 features added:
- Hardware revision detection
- v0.3 and v0.4 keyboard
- v0.4 power supply
- Inlined epd library (was a module) and made changes to the device definition (don't do full update after 5 small updates)
- Statusbar: add support for inverted colors
- e-paper driver improvements and warning fixes
- Implemented gpio_controller_get_level()
- Keyboard support improvements (unicode for tca drivers)
