Run OpenJDK's `apidiff` for JUnit APIs

[sormuras]

Run https://github.com/openjdk/apidiff to generate API difference overviews between various JUnit releases.

[sormuras]

Preliminary (had to exclude some "package methods" generated by Kotlin) results comparing the console standalone artifacts of version 1.10.4 and version 1.11.4:

[marcphilipp]

Does that include all APIs or only stable/maintained ones?

[sormuras]

All observable API as far as javac and the backing language model understands them.

For the record, here's the command line used to generate the results:

apidiff \
  --api 1.10.4 --class-path junit-platform-console-standalone-1.10.4.jar \
  --api 1.11.1 --class-path junit-platform-console-standalone-1.11.1.jar \
  --include "org.junit.**" \
  --exclude "org.junit.jupiter.api.*" \
  --exclude "org.junit.jupiter.params.**" \
  -d junit-1.10.4-1.11.1