If you would like to contribute code to this project you can do so through GitHub by forking the repository and sending a pull request.
When submitting code, please make sure your code is working and the CI build is passing. You can also check it locally by doing:
./gradlew checkstyle pmd build test
For auto-formatting, please make sure you're using the SquareAndroid codeStyle in AndroidStudio.
https://github.com/square/java-code-styles