Stable sync

Update Ardusub Metadata and Tuning page for Sub 4.0

Don't show GCS heading unless it comes from plugin

Heading value should be real so NaN comes through

Only trust gcs heading from plugin

Fix MAV_CMD_IMAGE_START_CAPTURE usage

Fix MAV_CMD_IMAGE_START_CAPTURE unit test usage for take photo

Vehicle clear failure

Fix MAV_CMD_IMAGE_START_CAPTURE usage

Windows: 64 bit installer changes

64 bit installer changes

APM Heli Setup change for parameter name

ROI for manual flight

Update localization files

# Conflicts:
#	ChangeLog.md

Fix reference to null

Move label for better fit

Android OpenSSL support

Fix lib path

Android OpenSSL support

FW Landing visuals

Plan View: Update vehicle heading from possible item change

Persist MissisonItemStatus visibility

Warning text update

Less wordy text

Add localization

Fix white on text coloring

Use Map Palette

Update vehicle heading from possible item change

Persist MissisonItemStatus visibility

MissionItemStatus: Show seq nums, clickable selection

Remove unused code

Fixes

Travis: Move to XCode 11.3

ArduPlane meta data update