## Edit PR Titles

* Edit the PR title to start with an emoji from <a href="https://gitmoji.dev/" class="external-link" target="_blank">gitmoji</a>.
    * Use the emoji character, not the GitHub code. So, use `🐛` instead of `:bug:`. This is so that it shows up correctly outside of GitHub, for example in the release notes.
    * For translations use the `🌐` emoji ("globe with meridians").

 *  **OkHttp now rejects request headers that contain invalid characters.** This
    includes potential security problems (newline characters) as well as simple
    non-ASCII characters (including international characters and emoji).

 *  **Call canceling is more reliable.**  We had a bug where a socket being
     connected wasn't being closed when the application used `Call.cancel()`.