[SmartHomeNG only] v2.0.0a Minor Bugfixes

This is a small service release with internal changes only.

While the plugin worked fine in a Python 3.10 / pymodbus 3 / Modbus RTU or TCP / Trovis 5579 environment,
a combination of Python 2.7 / pymodbus 2 / Modbus RTU on a Trovis 5576 threw some weird log entries.

Fixed in this release.

Note: Due to a system migration, this is my last official release of the plugin for the SmartHomeNG Home Automation System. Future releases will solely be related to HomeAsisstant.

[SmartHomeNG only] Release v2.0.0

2.0 changes:

Added support for Python 3.8+ and pyModbus3 (auto-switch between pymodbus2.2+/3.0+)
Added ModbusTCP support (for adapters with built-in TCP/RTU gateway like USR-TCP-K7 or USR-TCP232-E2)
Changed connection behaviour - added connect() and disconnect() to regular polls (formerly only at startup)
Updated register/coil tables, added new information, revised existing information, included Rk3 for 5579
Updated plugin.yaml: Rev 2 in format x.x.x, status 'ready', added 'werte' attribute to prevent errors in log
Removed unnecessary development files (templates, tools, assets) from official shNG-Plugins repo
Updated trovis.yaml items file, added Rk3+Sensors (e.g. for 5579)
New optional item attribute 'invalid_to_zero' to change response of 32767 (=switched off/unavailable/error) to 0
Updated Wiki, included A LOT of useful background information: github.com/Tom-Bom-badil/samson_trovis_557x/wiki

[SmartHomeNG only] Minor bug fixes, bunch of new explanations in readme's

Update __init__.py

Changed revision to 1.0.1 for new release

[SmartHomeNG only] Release 1.0

This release includes the latest bugfixes, changes and amendments.
It replaces older files in /plugins/trovis_557x.
Please do not forget to delete pycache if manually installed.

[SmartHomeNG only] Initial release

As the plugin is running well and smooth meanwhile, it is time to get it to the first release.

Still only reading out of registers/coils (no writing intended so far), and still without smartHomeNG Web Interface support.