v5.0.1

### Changed
- Downgrade from Kotlin `2.1.0` to `2.0.21`

v5.0.0

### Changed
- **BREAKING** `SwtMisc.systemFontWidth` now returns `double` instead of `int`.
  - added new methods `systemFontWidthTimes(int)` and `systemFontWidthTimes(String)` to make this easier to deal with
- **BREAKING** remove RxJava completely in favor of Kotlin Flow.
- Bump required java from 11 to 17.