Breaking change
All devices now supports 'System', so the const `SUPPORTS_SYSTEM` is removed.
What's Changed
* Add support for identify and system for HWE-WTR by DCSBL in https://github.com/homewizard/python-homewizard-energy/pull/347
**Full Changelog**: https://github.com/homewizard/python-homewizard-energy/compare/v4.3.1...v5.0.0