- update Kotlin from 1.7.10 to 2.0.21
- Kotlin 1.6 dependencies in Gradle lock files are expected because kotlinc,
which is also used by some tests, internally uses some 1.6 dependencies
for backwards compatibility reasons.
- update kotlinx-html and kotlinx-serialization
- adapt Kotlin code where necessary
- use Kotlin stdlib Path APIs where possible
- fix IntelliJ Kotlin inspection warnings
- reformat code with `./gradlew spotlessApply`
- ktfmt adds lots of trailing commas
- Add workaround to fix IntelliJ "unresolved reference" errors
This adds release notes for 0.26.
Also:
* Adjust IJ settings to ignore certain http: strings
* Add note about http introduced in 0.26 in message passing api
Co-authored-by: Philip K.F. Hölzenspies <holzensp@gmail.com>