* Foundations for the reactorless mode.
* Add simple subprocess tests for reactorless AsyncCrawler*.
* More reactorless tests.
* Refactor AsyncCrawlerProcess.start().
* More checks.
* Fix test_reactorless_import_hook.
* More tests.
* Call install_reactor() before asyncio.run().
* Cleanup.
* Rephrase.
* Rephrasing.
* Set TELNETCONSOLE_ENABLED=False in the reactorless mode.
* 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().