Map Marker

Sep 28, 2021

* Android 5 and up:
- Storage permission is now read-only
- Using the system file picker for imports/exports
* Android 6 and up: no longer requests the storage permission for imports/exports
* Android 10 and up:
- Full support for scoped storage
- The app no longer has the storage permission at all
- Now using the system file picker for offline maps files (files must be in a specific app folder)
* Full compatibility with Android 11
* Updated Google Play billing library to v3