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

* commit '8e4e5549371dc4c373c67ea84cb21ce9cdf7502e':
  Doc change: Mention ratings in app stats intro, mention proguard in pub checklist, align terminology wrt native platform filtering.