If you would like to contribute code you can do so through GitHub by forking the repository and sending a pull request (on a branch other than `master` or `gh-pages`).
Pull requests eventually need to resolve to a single commit. The commit log should be easy to read as a change log. We use the following form to accomplish that.
* First line is a <=72 character description in present tense, explaining what this does.
* Ex. "Fixes regression on encoding vnd headers" > "Fixed encoding bug", which forces the reader to look at code to understand impact.
* Do not include issue links in the first line as that makes pull requests look weird.
When submitting code, please ensure you follow the [Google Style Guide](http://google-styleguide.googlecode.com/svn/trunk/javaguide.html). For example, you can format code with IntelliJ 13 using [this file](https://google.github.io/styleguide/intellij-java-google-style.xml) and with IntelliJ 15 using [this file](https://raw.githubusercontent.com/garukun/styleguide/add-intellij-15-java/intellij-15-java-google-style.xml).