chore: bump package version 

Merge pull request python-gitlab#842 from python-gitlab/chore/bump-pa… …ckage-version chore: bump package version to 1.10.0

Merge pull request python-gitlab#797 from python-gitlab/feat/version-… …bump feat: bump version to 1.9.0

Merge pull request python-gitlab#705 from python-gitlab/release-1.8.0 Release version 1.8.0

Merge pull request python-gitlab#657 from python-gitlab/release-1.7.0 Prepare the 1.7.0 release

1.6.0 release 

1.5.1 release 

Prepare the 1.5.0 release 

ChangeLog: fix link 

Prepare the 1.3.0 release