python-boolean.py-4.0-bp160.1.2

- Convert to pip-based build

- update to 4.0
  * API changes
    + Drop support for Python 2.
    + Test on Python 3.10
    + Make Expression.sort_order an instance attributes and not a
    class attribute
  * Misc.
    + Correct licensing documentation
    + Improve docstringf and apply minor refactorings
    + Adopt black code style and isort for imports

- %check: use %pyunittest rpm macro

- update to 3.7
  * Add new sort argument to simplify() to optionally not sort when
    simplifying expressions (e.g. not applying "commutativity").
  * Add new argument to tokenizer to optionally accept extra
    characters in symbol tokens.

- Use noun phrase in summary.

- New package, version 3.6