Release v3.1.0

Summary

eta_utility 3.1.0 adds a Connection to the German weather service (DWD).

We are dropping support for Python 3.8!

Please list breaking changes, new features or bugfixes

• Breaking changes:
  • Dropped support for Python 3.8 (due to the module wetterdienst requiring python > 3.8)
  • Update stablesbaslines3 to v2.2.1
  • Removed the deprecated package opcua in favor of opcua-asyncio
  • Changes from stablesbaslines3 v2.2.1 adapted to the changes from Gym to Gymnasium in no_vec_env.
• New features:
  • Future releases will strictly adhere to the Semver versioning schema
  • New Templates for Merge Requests / Issues / Releases
  • Added cobertura visual test coverage report
  • Improved Error handling in live_connection
  • Add julia_env to the documentation
• Bugfixes
  • Check index existence in csv_export
  • Removed deprecated license scanning from CI
  • Fixed CI dependency updating
  • Fixed Error handling in live_connection