* Make Travis run Ubuntu Xenial (newer version) and Python 3.7 instead of Python 3.7-dev. PR <ahref="https://github.com/tiangolo/fastapi/pull/92"target="_blank">#92</a> by <ahref="https://github.com/blueyed"target="_blank">@blueyed</a>.
* Fix duplicated param variable creation. PR <ahref="https://github.com/tiangolo/fastapi/pull/123"target="_blank">#123</a> by <ahref="https://github.com/yihuang"target="_blank">@yihuang</a>.
* Add docs about <ahref="https://fastapi.tiangolo.com/tutorial/extending-openapi/"target="_blank">Extending OpenAPI</a>. PR <ahref="https://github.com/tiangolo/fastapi/pull/126"target="_blank">#126</a>.