Merge pull request #6936 from libgit2/ethomson/v1.8.4

libgit2 v1.8.4

Merge pull request #6931 from libgit2/ethomson/v1.8.3

Merge pull request #6830 from libgit2/ethomson/v1.8.2

libgit2 v1.8.2

Merge pull request #6830 from libgit2/ethomson/v1.8.2

libgit2 v1.8.2

Merge pull request #6817 from libgit2/ethomson/v1.8.1

libgit2 v1.8.1

Merge pull request #6767 from libgit2/ethomson/v18

Release v1.8

v1.7.2: update version numbers

v1.6.5: update version numbers

Merge pull request #6622 from libgit2/ethomson/v1.7.1

libgit2 v1.7.1

Merge pull request #6863 from libgit2/ethomson/v1.7

v1.7: release Kleine Raupe Nimmersatt