Fixes build

Log replay: Support changing speed of playback

Configurable Go To Location max distance

Update

Support replay speed changing

Fix bug where QGCComboBox { model: ListModel would not work correctly

Object avoidance

Configurable Go To Location max distance

Configurable maximum distance on Go To Location

Configurable maximum distance on Go To Location

Add collision avoidance settings to Safety Panel

ArduCopter: Add Follow, Flow Hold, ZigZag flight modes

Disable full screen video if no vehicle or connection lost

Show how to implement custom video manager

Fix MSVC 2015 "fatal error C1060: compiler is out of heap space"

Make Internet test optional.

Disable preflight checklist if vehicle is armed.

Photo idle