Fix Flask and Django multiprocess tests.
Fix test logs not being captured by pytest.
Fix "import debug_me" check improperly applied in tests where it is unnecessary.
Fix some clarifying patterns not respecting the underlying pattern.
Add pattern helpers for strings: starting_with, ending_with, containing.
Move DAP test helpers to a separate module, and add a helper for frames.
Add support for line markers when setting breakpoints and matching frames.
Assorted test fixes around handling of Unicode and paths.
Fix various bugs around handling of disconnect in JsonIOStream and JsonMessageChannel.
Fix handling of DAP "terminated" event in debug.Session.
Add --ptvsd-logs and --pydevd-logs switches to pytest.
Improve message logging to fully capture the raw message data in the logs if deserialization fails.
Log all debuggee environment variables in debug.Session, and improve log readability.
* Replace wait_for_thread_stopped with wait_for_stop
* Switch flask tests to use flask server
* Assert linter
* Use marked lines
* Fix stack logging in tests
* Prevent black from formating some debug code
* Simplify flask tests
* Replace send_request(continue) with send_continue
* fix typo
* Update ANY to some
* Refactor breakpoint lines in tests
* Replace old import and emable debug with debug_me
* Remove unused code
* Fix some linter issues
* Change from some.such_that to some.str.such_that
* Linting with black
