Release v2.4

Merge pull request #34 from chr0mag/python-3.12

Add Python 3.12 support.
Closes #34

Merge pull request #29 from chr0mag/python3.11

Python 3.11 support

Fix handling of intervals with same start & end

nftables disallows intervals (ranges) that begin and end with the
same IP address (ie. a range of 1 element). Add a check for this
case and add the single IP.

Increment version to 2.3.4.

Bump version to 2.3.2

Merge pull request #17 from chr0mag/python-3.10

Add Python 3.10 support

Functionaly the same as v2.2.4, but built with a clean package build.

Add command line arguments.

Add Python 3.9 support.

Add dbip provider support.