Dot-syntaxify.
Use `-fileSystemRepresentation` here.
File reference URLs are file URLs; no need for a separate test.
Useless call; file reference URLs know how to path-ify themselves.
Move all GTRepositoryTests under GTRepositorySpec.
Add a method to enumerate a repository's references.
Fix the documentation of that one.
Test that the remote set by `+clone…` looks fine to libgit2.