Adds support for Checkstyle 8.21 and above.
This is a major change (new major version), because the Checkstyle API was changed in a way that cannot be compensated by our internal CheckstyleApiFixer (classes were changed into interfaces with the same name, so we must re-link everything). The following change results for Checkstyle Addons users:
By default, this version (v6.0.0) is compatible with Checkstyle ≥ 8.21. If you want to use Checkstyle Addons v6.0.0 with older versions of Checkstyle, you must now use the proper variant of Checkstyle Addons:
- Checkstyle ≥ 8.21: normal Checkstyle Addons
- Checkstyle 7.0 - 8.20: use Checkstyle Addons "
- Checkstyle 6.17 - 6.19: use Checkstyle Addons "
java7" variant (still Java 7 compatible)
- older Checkstyle: use Checkstyle Addons 4.x
Details may usually be found in the Checkstyle Compatibility Matrix.