Version 2.4 of the ArduCopter code is now available in the AP Mission Planner and in the downloads area.  Although not as big a change as the 2.3 release, it still includes a respectable number of enhancements and bug fixes.   Enhancements: massive reduction in memory use (>2k saved!) due to Parameters change and APM2 baro lib fix.  TradHeli code can again advance in hand with the quad cod…