* Recreate component if discovery info is changed
* Update component instead of remove+add
* Set name and unique_id in __init__
* Update unit test
* Cleanup
* More cleanup
* Refactor according to review comments
* Change discovery_hash
* Review comments, add tests
* Fix handling of value_template
* Add support for off_delay to MQTT binary_sensor
* Fix debounce, add testcase
* Make off_delay number of seconds instead of timedelta
* Update mqtt.py
* Fix testcase, remove CONF_OFF_DELAY from const.py
* MQTT Binary Sensor - Add availability_topic for online/offline status
Added topic, configurable payloads, and tests.
* Relocated state subscribe function
Moved state subscribe function to follow the state listener function.
* Add event loop to the core
* Add block_till_done to HA core object
* Fix some tests
* Linting core
* Fix statemachine tests
* Core test fixes
* fix block_till_done to wait for loop and queue to empty
* fix test_core for passing, and correct start/stop/block_till_done
* Fix remote tests
* Fix tests: block_till_done
* Fix linting
* Fix more tests
* Fix final linting
* Fix remote test
* remove unnecessary import
* reduce sleep to avoid slowing down the tests excessively
* fix remaining tests to wait for non-threadsafe operations
* Add async_ doc strings for event loop / coroutine info
* Fix command line test to block for the right timeout
* Fix py3.4.2 loop var access
* Fix SERVICE_CALL_LIMIT being in effect for other tests
* Fix lint errors
* Fix lint error with proper placement
* Fix slave start to not start a timer
* Add asyncio compatible listeners.
* Increase min Python version to 3.4.2
* Move async backports to util
* Add backported async tests
* Fix linting
* Simplify Python version check
* Fix lint
* Remove unneeded try/except and queue listener appproriately.
* Fix tuple vs. list unorderable error on version compare.
* Fix version tests
