QGroundControl v3.0.1

-Attitude indicator correctly updates when displayed in horizontal orientation instrument panel (small phone screens, virtual joystick turned on)
-Video working correctly on Windows
-Properly convert knots to m/s
-Fix crash on Vehicle disconnect

Removing forced Mac OS SDK.

Virtual Joystick: Draw outer circle as well for better visual

VTOL takeoff/land waypoints label VT/VL

Adding Sony a6000 to camera list

Linux add icon with setWindowIcon

Sony a6000 ILCE-6000 with 16mm lens.
Source : 
http://www.sony.co.uk/electronics/interchangeable-lens-cameras/ilce-6000-body-kit#product_details_default

-fixes #4073

Survey: Corrected EOS-M focal length

it's not a typical APS-C sensor, proper size gives more accurate
calculations.

-fixes #4035

The 22mm as stated on the lens is actual, not 35mm equvalent as on smaller
cameras.  - So it was wrong to reverse calculate for crop factor.

Fix joystick coloring

Add support for HIL_ACTUATOR_CONTROLS with X-Plane HITL

fix FW stabilized mode description

Show help button on FactTextFields

Improve USB Interface detection reliability and support for LibrePilot compatible USB IDs

iOS Build Tweaks

This reverts commit ae976049ca7b4818616e6b8be07a028fc7dfc26f.

Global fact meta data setup

Update README.md