Want to contribute? Great! First, read this page (including the small print at
the end).

### Before you contribute

Before we can use your code, you must sign the [Google Individual Contributor
License Agreement]
(https://developers.google.com/open-source/cla/individual?csw=1) (CLA), which
you can do online. The CLA is necessary mainly because you own the copyright to
your changes, even after your contribution becomes part of our codebase, so we
need your permission to use and distribute your code. We also need to be sure of
various other things—for instance that you'll tell us if you know that
your code infringes on other people's patents. You don't have to sign the CLA
until after you've submitted your code for review and a member has approved it,
but you must do it before we can put your code into our codebase. Before you
start working on a larger contribution, you should get in touch with us first
through the issue tracker with your idea so that we can help out and possibly
guide you. Coordinating up front makes it much easier to avoid frustration later
on.

### Code reviews

All submissions, including submissions by project members, require review. We
use Github pull requests for this purpose.

### The small print

Contributions made by corporations are covered by a different agreement than the
one above, the Software Grant and Corporate Contributor License Agreement.