* Initial implemenation of DSMR component.
* Fix linting
* Remove protocol V2.2 support until merged upstream.
* Generate requirements using script.
* Use updated dsmr-parser with protocol 2.2 support.
* Add tests.
* Isort and input validation.
* Add entities for gas and actual meter reading. Error handling. Use Throttle.
* Implement non-blocking serial reader.
* Improve logging.
* Merge entities into one, add icons, fix tests for asyncio.
* Add error logging for serial reader.
* Refactoring and documentation.
- refactor asyncio reader task to make sure it stops with HA
- document general principle of this component
- refactor entity reading to be more clear
- remove cruft from split entity implementation
* Use `port` configuration key.
* DSMR V2.2 seems to conflict in explaining which tariff is high and low.
http://www.netbeheernederland.nl/themas/hotspot/hotspot-documenten/?dossierid=11010056&title=Slimme%20meter&onderdeel=Documenten
> DSMR v2.2 Final P1
>> 6.1: table vs table note
Meter Reading electricity delivered to client normal tariff) in 0,01 kWh - 1-0:1.8.1.255
Meter Reading electricity delivered to client (low tariff) in 0,01 kWh - 1-0:1.8.2.255
Note: Tariff code 1 is used for low tariff and tariff code 2 is used for normal tariff.
* Refactor to use asyncio.Protocol instead of loop+queue.
* Fix requirements
* Close transport when HA stops.
* Cleanup.
* Include as dependency for testing (until merged upstream.)
* Fix style.
* Update setup.cfg