Release candidate 0.8.2-rc6
* Fixed CTCSS not being transmitted * Faster scanning by not changing modes and CTCSS if unnecessary * Skip channel scan setting * Update GUI when changing channels during scan * Added 2FSK mode with Codec2 700C, all 2FSK modes now have RRC filtering * Fixed issues in relay controller * Added IP modem burst mode setting to GUI * Increased resilience of DQPSK modes