You are more than welcome to create a pull request to fix a bug or add a new feature.
The codebase follows Google Java Style Guide guideline.
When submitting code, please make every effort to follow existing conventions and style in order to keep the code as readable as possible.
Try to keep lines of code around 100 characters in length or less, though this is not a hard limit. if you're a few characters over then don't worry too much.
A single pull request should be submitted for each change. If you're making more than one change, please submit separate pull requests for each change for easy review.