Extract GitFS repo initing into its own method.
No need to instantiate GitFS.
Init the GitFS repo separately, instead of automatically in #commit.
Wrap up the git fs snapshot logic in GitFS.snapshotting_with.
Create a base snapshot of the existing state when initing.
v0.17.5 - Support for debian geoip mirrors from Laurent Vallar, new debian versions, grey text on linux ptys, some minor core dep updates.
Merge branch 'git-fs'