* De-run_forever()-ization
* Use asyncio.run (or our own implementation on Python <3.7)
* hass.start is only used by tests
* setup_and_run_hass() is now async
* Add "main" async hass.run method
* move SIGINT handling to helpers/signal.py
* add flag to .run to disable hass's signal handlers
* Teach async_start and async_stop to not step on each other
(more than necessary)
* shorten over-long lines
* restore missing "import asyncio"
* move run_asyncio to homeassistant.util.async_
* LOGGER: warn => warning
* Add "force" flag to async_stop
only useful for testing
* Add 'attrs==18.2.0' to requirements_all.txt
Required for keeping requirements_test_all.txt in sync, where it is in
turn required to prevent auto-downgrading "attrs" during "pip install"
* Fixes for mypy
* Fix "mock_signal" fixture
* Revert mistaken edit
* Flake8 fixes
* mypy fixes
* pylint fix
* Revert adding attrs== to requirements_test*.txt
solved by using "pip -c"
* Rename "run" to "async_run", as per calling conventions
0121e3cb04