NoSurf for reddit

Feb 12, 2020

- Add "Mark all as read" feature
- Add option to disable swipe-to-refresh (addictive design pattern)
- Remove left-right swiping between "Your Subreddits" and "/r/all" screens (addictive design pattern)
- Make "Your Subreddits" default screen
- Add option to disable "/r/all" screen
- Raise minSdkVersion to 23 from 15
- Misc. bug fixes and performance enhancements