Bump to v5.3.1 for release.
Merge branch 'master' into next
Bump to next development release.
Ignore generated Android assets.
Allow whitespace in incoming JSON messages.

Fixes receiving data from the openxc-vehicle-simulator.
Merge remote-tracking branch 'origin' into next

Conflicts:
	enabler/AndroidManifest.xml
Merge branch 'master' into next
Update changelog.
Update package versions for release.
Update to 5.3.2 for release.