Python 3.10 support

v0.4.3

Bump version: 0.4.2 → 0.4.3

Do not use the pip's internal api as it isn't working anymore

• Pull request #9: Do not use the pip's internal api as it isn't working anymore
• Issue #10: Add Python 3.7 and python 3.8 support
• issue #11: Add bumpversion

Pip 10.0 support

v0.4.1

0.4.1 release

v0.4.0

0.4.0 release (thanks @cowsrule!).

v0.3.0

Bump version to 0.3.0.