Bumped version to 2.0.0 (#164)
Bumped version to 2.0.0 (#164)

- The dependency on androix.appcompat was removed, which allows
  outputting smaller APKs when using the library.
- But this means existing applications may need to update
  `styles.xml` to remove the dependency and extend Activity
  instead of AppCompatActivity.
GoogleChrome/android-browser-helper,GoogleChrome/android-browser-helper