Bump version to 230
Bump version to 230

This matches what was done for libgudev. This way we have plenty of time
to remove the module from systemd, and this version will always be "newer".

again4you/python-systemd,Awesense/python-systemd,Awesense/python-systemd,keszybz/python-systemd,again4you/python-systemd,systemd/python-systemd,systemd/python-systemd,Awesense/python-systemd,keszybz/python-systemd