Release python-nitrate 1.9.0

Release python-nitrate-1.8.2

Release python-nitrate-1.8

Release python-nitrate-1.7

Release python-nitrate-1.6

Remove group, fix license, add missing requires

Version bump and changelog entry for 1.4

Version bump and changelog entry 1.3-2

Version bump and changelog entry for 1.3

Version bump and changelog entry for 1.2