Improved HIL startup script, added highres HIL receive routine
Merge branch 'master' of github.com:PX4/Firmware into hil
Added generation of pressure altitude in highres IMU message mode
Merge pull request #244 from PX4/hil

Small HIL improvements
position_estimator_inav: bugfixes, some refactoring
Merge branch 'master' of https://github.com/PX4/Firmware into inertial_nav2