[x] put together release notes (Update GCM push URL, stop manually overriding the GOMAXPROCS (defaults are now reasonable), describe new optional fields of subscriptions, describe changes to pushredisdb, etc)
[x] Manually test android and iOS pushes
[x] bump the version in the code
[x] Run fpm scripts
[x] Create a GitHub release
[x] Update uniqush-www mentioning new features and bug fixes
[x] Continue working on fixing linter errors, test coverage, etc. for a 2.6.1 release