Bump versino to 1.5.0.1

Merge pull request libgit2#931 from libgit2/cmn/bump-version-15

Bump rugged version to v1.5.0

Merge pull request libgit2#922 from libgit2/bump-v14

Update to libgit2 v1.4.4

Merge pull request libgit2#924 from libgit2/bump-v13

Update version to v1.3.2.3

Merge pull request libgit2#912 from libgit2/cmn/update-14

Update to libgit2 v1.4.3

Merge pull request libgit2#915 from libgit2/maint-13-fixups

Fixups for the 1.3 maintenance series

Bump version to v1.3.2

We already had v1.3.1 out of the master branch which, as it was
non-standard procedue, managed to confuse the versioning when doing it
in the maintenance branch.

Merge pull request libgit2#906 from libgit2/cmn/bump-libgit2

Update libgit2 to v1.4.2

Merge pull request libgit2#901 from libgit2/cmn/bump-version

Bump version to 1.3.1

Merge pull request libgit2#891 from FnControlOption/1.3.0

Bump version to 1.3.0