htheatpump v1.2.2

Changelog:

• added sample file htparams-xxxxxx-3_0_20-273.csv with a complete list of all heat pump parameters
  from a Heliotherm heat pump with SW 3.0.20
• added new sample script htcomplparams.py to create a complete list of all heat pump parameters
• added some more heat pump parameters (data points) in htparams.csv
• Python code reformatting using Black
• changed package requirements structure; some changes in setup.py, setup.cfg, tox.ini, etc.