Prepare the project for a release

1. Make sure all unit and integration tests are passing.

2. Follow the classic and karaf instructions to update the licenses of source and binary dependencies. For step 5 of the the karaf version (create a temporary pom.xml), the following template can be used: ```

   4.0.0 foo bar baz pom

   </project> ```

3. Update the release notes. To help in the process list merged PRs after a ceratin date.