Merge tag 'v1.7-rc2' (William Casarin)

v1.7 (11) (Daniel D’Aquino)

Enable IAP feature for release (Daniel D’Aquino)

Add UI error message when IAP succeeds but receipt verification fails (Daniel D’Aquino)

Purple: Improve UX on Damus Purple renewals (Daniel D’Aquino)

Add Damus Purple impending expiry notification support (Daniel D’Aquino)

pushed to damus:refs/heads/master

http://git.jb55.com/damus/commit/75d87fee9d1371d75bb4652aba48fab3ed768eed.html