**New feature**
- ``kinto rebuild-quotas`` script was written that can be run to
repair the damage caused by 1226 (fixes 1230).
**Bug fixes**
- The ``default_bucket`` plugin no longer sends spurious "created"
events for buckets and collections that already exist. This causes
the ``quotas`` plugin to no longer leak "quota" when used with the
``default_bucket`` plugin. (1226)
- Fix race conditions on deletions with upsert in PostgreSQL ``storage.update()`` (fixes 1202).
- Fix PostgreSQL backend race condition when replacing permissions of an object (fixes 1210)
- Fix missing package.json file in package. (1222)
- Fix removal of timestamps when parent object is deleted (fixes 1233)