Latest binary with: SONAR support.  Free RAM improvements.  Prevent arming after connecting a battery when the throttle is in low; when using a switch to arm and when the switch is left in the ON position.  PWM Failsafe improvements.  MSP Telemetry on telemetry port.  Support MSP on multiple ports.

This reverts commit bd42c12f32d1b7af36227fd58a9c56c6f61d2d94 - it turns out the binary was fine after-all, the configurator needed updating, see #59.