Changes

The [https://wiki.mozilla.org/ReleaseEngineering/TryServer TryServer] is a critical piece of our infrastructure for ensuring that patches are suitable for landing prior to being pushed. However, proper usage is important to avoid pushing under- or over-tested patches. This page is intended to provide some recommended practices for finding the right balance. The [http://trychooser.pub.build.mozilla.org/ TryChooser Syntax Builder] offers control over which builds and tests are run.