v0.7.18

Changes

• controldir: pass target revision to push_branch as revision_id
• forge: handle None from get_{source,target}_branch_url
• repository: detect remote git repos in vcs_type via isinstance
• repository: skip git vcs_type test on Windows

Dependency updates

• Bump deb822-lossless from 0.5.14 to 0.5.15 (#198)