Full support for Java 17 (notice that OpenClover 4.5.x has experimental support for Java 17).

Support for Groovy 3.x and 4.x, including the support for @CompileStatic (issue #31).

Significant code refactoring, java package relocation, removal of some third party dependencies, new repackaging of third party libraries, minimized JARs.

More details on https:…