Improvements and fixes
- New servers: US East (New York), US West (Seattle) and Japan (Tokyo), picked automatically by distance
- The server picker shows every server on screen, two per row, and works with a controller
- Fixed DS sessions failing to open WatermelonDS Emufii Edition on Xiaomi phones (MIUI)
- A clear message when the DS emulator is installed but can't be opened, instead of a system error
- Guests far from the session's server are told to expect input lag
- Fixed other files (.app, .3dsx) showing up as 3DS games in unsorted folders
- Anonymous session diagnostics (launch result, netplay events, distance to the server) to fix multiplayer issues faster
DS players: update WatermelonDS Emufii Edition to 0.8.0.rc2-emufii.6 too, every player in a session needs it.