HtREST v0.1.11

Changelog:

• Bumped htheatpump from 1.3.1 to 1.3.2.
• Bumped Flask from 1.1.2 to 2.0.3.
• Bumped flask-restx from 0.2.0 to 0.5.1.
• Bumped flake8 from 3.8.4 to 4.0.1.
• Bumped tox from 3.21.3 to 3.24.5.
• Bumped mypy from 0.800 to 0.931.
• Bumped coverage from 5.4 to 6.3.2.
• Bumped pytest from 6.2.2 to 7.0.1.
• Bumped pytest-mypy from 0.8.0 to 0.9.1.
• Bumped pytest-cov from 2.11.1 to 3.0.0.