Dsmr-parser

- Add support for Belgian and Smarty meters (`PR 44 <https://github.com/ndokter/dsmr_parser/pull/44>`_).

- Fixed asyncio loop issue (`PR 43 <https://github.com/ndokter/dsmr_parser/pull/43>`_).

- Changed serial reading to reduce CPU usage (`PR 37 <https://github.com/ndokter/dsmr_parser/pull/37>`_).

- Fix DSMR v5.0 serial settings which were not used (`PR 33 <https://github.com/ndokter/dsmr_parser/pull/33>`_).

- Add serial settings for DSMR v5.0 (`PR 31 <https://github.com/ndokter/dsmr_parser/pull/31>`_).
- Lux-creos-obis-1.8.0 (`PR 32 <https://github.com/ndokter/dsmr_parser/pull/32>`_).

- NULL value fix in checksum (`PR 26 <https://github.com/ndokter/dsmr_parser/pull/26>`_)