[UIMA-5764] augment RELEASE_NOTES with more details of changes.  Add API Compatibility check report.  Update the pom assembly to avoid duplicate calls. Document new features in users guide.

git-svn-id: https://svn.apache.org/repos/asf/uima/addons/trunk@1829548 13f79535-47bb-0310-9956-ffa450edef68
6 files changed