mission feasibility checker: add check for waypoint altitude relative to home position altitude
mission feasibility checker: remove audio warning for waypoint below home altitude
mission feasibility checker: add missing default return in checkHomePositionAltitude
Port expander driver first hacky version
attitude_estimator_ekf: auto detect mag declination using GPS coordinates
Merge branch 'master' into ekf_auto_mag_decl
mavlink app: Clean up allocations
Converted streams to new API, saving a bunch of RAM
mavlink app: Fix compile error
mavlink app: Finish porting all messages to new scheme
Merge branch 'master' into ekf_auto_mag_decl
navigator: takeoff fix, always reach takeoff altitude, even if first waypoint is lower
rc.mc_defaults: set default acceptance radius (NAV_ACCEPT_RAD) to 2m
position_estimator_inav: remove acceleration from state and INAV_W_XXX_ACC parameters, more NaN checks
ekf_att_pos_estimator: Default printing to off
mavlink mission item takeoff: read correct param for minimal pitch
Merge pull request #1013 from PX4/waypointminpitch

mavlink mission item takeoff: read correct param for minimal pitch
navigator: autocontinue and RTL autolanding fixes
romfs: Added back mixer readme, now gets filtered out
Merge branch 'master' of github.com:PX4/Firmware