Large changes are happening on
master right now:
More time is needed to stabilize these changes so instead of releasing
master as v2.2 on April 16, it will release as v2.3 on May 16th.
Instead, a new branch for v2.2, based on v2.1 release branch with bug fixes and updates, will be released on April 16. The changes in v2.2 will be merged into
master and available as v2.3 on May 16.