* Move no-reactor to pytest-asyncio.
* Unify the style.
* Skip a test that installs a reactor in no-reactor.
* Fix pinned env deps.
* Strict pytest-asyncio mode.
* Migrate to pytest-twisted (WIP)
* Some typing fixes.
* Make --reactor=asyncio the default again.
* Try installing the correct event loop policy in tests on Windows.
* Make reactor_pytest a normal fixture.
* Fix test warnings.
* Fix FTPDownloadHandler teardown.
* Cleanups, typing.
* More cleanup.
* Update only_asyncio/only_not_asyncio mark messages.
* Add a basic Crawler.crawl_async().
* Add custom loop tests for *CrawlerRunner.
* Add AsyncCrawlerProcess.
* Update related docs.
* Update practices.rst.
* Address test failures.
* Add a note about AsyncCrawler* to the docs about switching reactors.
* Address feedback.
* Update for TID253.
* Simplify test_crawler_crawl_async_twice_parallel_unsupported().