* Run mitmproxy-based tests for every handler and improve them.
* Fixes for H2DownloadHandler.
* Revert "Fixes for H2DownloadHandler."
This reverts commit bcdbd097cd.
* Add TestHttpsProxy for HTTP11DownloadHandler.
* Use the configured context factory in ScrapyProxyAgent.
* Reword.
* Reword.
* pragma: no cover for H2DownloadHandler proxy code.
* Raise an exception for HTTPS proxies instead of using HTTP.
* Remove non-working proxy support and explicitly forbid HTTP.
* pragma: no cover
* Add a docs note about HTTPS proxies.
* Rename ScrapyProxyAgent.
* Await some missed deferreds.
* Simplify test_engine_stop_download_*.
* Fix the header value.
* Extend TestHttpWithCrawlerBase.
* Make test_tls_logging more universal.
* Add more tests for header handling.
* Clarify certificate and ip_address integration tests.
* Make test_download_with_maxsize_very_large_file() more universal.
* Fix test_coroutine_asyncio().
* Typo.
* Switch TestEngineBase to mockserver.
* Split mockserver.py.
* Stop using WrappingFactory.
* Remove keyfile/certfile fields from TestHttpBase.
* Move webclient-only resources to test_webclient.py.
* Refactor MockServer.url().
* Migrate TestHttpBase to mockserver.
* Migrate TestSimpleHttpsBase to a separate mockserver.
* Rename TestHttpMockServerBase.
* Migrate TestHttpProxyBase to a separate mockserver.
* Refactor HTTP mockservers.