1.11.5

1.11.5 (2018-04-13)

• git: make Git.FS.test_and_set_references work better with packed
  references (#291, @samoht. Fixes moby/datakit#633)
• git-unix: ignore trailing newlines when doing 'test and set' on
  reference files (backport of moby/datakit#611, @samoht. Fixes moby/datakit#610)
• git-mirage: fix linking of tests (@samoht)