Bug fixes:
- Fix re-hashing an already hashed password in UpdateUserRecord
- Fix validator incorrectly flagging swift client name
- Switched a > to a < when checking field length for #TM packets
Misc:
- Simplify client reader goroutine
- Simplify client writer logic
Features:
- Add an option to enable plaintext passwords (replacing the JWT token in the AddPilotPDU `token` field.)