Release 8.27.0

Merge branch 'develop'

* develop:
  Version bump to v8.27.0
  Making sure non-completed realtime query matches are released even if full track does not match.
  This is a dangerous implementation that can lead to memory leaks, let's not publish it for the general public.
  When purging we need to clear tracks as well.
  RealtimeQueryResult can contain the information about ongoing realtime entries.