Bump to a snapshot release for development.
Typo fix.
Update link to docs.
Merge branch 'master' into next
Release service connection in VehicleManager even if it never connected.

This fixes a "leaked service connection" error if you unbind from the
VehicleManager from an app, and the VehicleService was never running.
Strip timestamp from command before sending to vehicle.
Bump to Android API 18.
Update Travis CI config for Android API 18.
Update Android setup for Travis CI.
Prep for 4.0.3 release.
Merge remote-tracking branch 'origin/ci-fix' into next
Revert back to snapshot, testing release strategy.
Use newer maven-release-plugin to fix issues with GitHub (maybe).
Ignore Maven relase backup files in Git.
Use git via SSH for developers making releases.
Auto bump the versions of sub-modules the same as the parent.
Remove an unpredictable test case.
[maven-release-plugin] prepare release v4.0.3