This is a Google Play store requirement as of November 1st, 2018.
https://android-developers.googleblog.com/2017/12/improving-app-security-and-performance.html

PreFlight: Reset not working correctly

Feature: Concave Polygon Support by Splitting into Sub-Polygons

Fix reset handling

Only version check stable builds

Create simplified camera page for sub

Parameter Editor: Support editing of non-default component params

Stable merge

Expose guided altitude settings. Rearrange Fly and Plan view settings.

Support editing non-default component parameters

Clarify category map usage

Support parameters from multiple components

KML: Better file load error messages

Expose guided altitude settings. Rearrange Fly and Plan view settings.

RTSP UDP timeout

multiple polygons

need to fully implement vertexvisibility

[Survey transects generation] move some of the logic handling out of function that handles only one polygon

Better file load error messages

Use correct terminology for Altitude values

Use correct terminology for Altitude values

Option driven firmware version check

Turn on OSX builds