The p2 Update sites listed above (since 0.13.0) contain a japicmp report against the last released version to make it easier to identify API changes. The Eclipse LSP4J project uses Semantic Versioning ...
The PCRE4J project's goal is to bring the power of the PCRE library to Java. PCRE4J provides 100% coverage of the PCRE2 API, giving you access to every feature of the PCRE2 library from Java.