am 74d4638e: am a44583c1: am 8e4e5549: am d9019dd2: Doc change: Mention ratings in app stats intro, mention proguard in pub checklist, align terminology wrt native platform filtering.

* commit '74d4638e2821e21885528d79d5b39c0ac08d3740':
  Doc change: Mention ratings in app stats intro, mention proguard in pub checklist, align terminology wrt native platform filtering.