[maven-release-plugin] prepare for next development iteration
Bump to next development version.
Merge branch 'master' into next
Log transfer stats more often.
Add Crashlytics for error tracking (optional).

To use the error tracking, you need to add a Crashlytics API key to the
AndroidManifest.xml of the enabler.

See #111.
Fix Eclipse build for enabler.
Merge branch 'next' into crashlytics
Add bogus Crashlytics API key to allow build.
Add Crashlytics JAR for Eclipse build.
Fix Travis CI build by adding build-tools from Android SDK.

Fixed #55 - finally!
Fix Travis CI build by adding build-tools from Android SDK.

Fixed #55 - finally!
Only run tests suite for openxc-it on CI.
Merge branch 'ci-fix' into next

Conflicts:
	.travis.yml
Enabler automatic Bluetooth device selection by default.

Fixed #108.
Remove unused imports.
Simplify Bluetooth connection initialization.
Only attempt to load bluetooth devices if an adapter is present.
Handle Bluetooth device lookup in preference manager.
Add a note about validating Bluetooth MAC addresses.
Persist discovered Bluetooth device list.