Fix: "Type[type]" is incompatible with "Type[property]"

[vitalogy]

Pylance in VSCode issues:
Expression of type "OBJ_CLASS" cannot be assigned to declared type "property"
"Type[type]" is incompatible with "Type[property]"

• removed property/abstractmethod OBJ_CLASS and only defined OBJ_CLASS, by omitting the initial value, leaves the variable uninitialized

other changes:

• update .gitignore (from https://github.com/github/gitignore/blob/main/Python.gitignore)
  with this, a created directory .venv is also ignored
• fix misspelled words

[msiemens]

Thanks!

[msiemens]

This has been released in v2.2.1 🎉