Making Binding public

[edrevo]

Sometimes when using git2 I'd like to use some libgit2 functionality that isn't exposed. libgit2-sys is already exporting the functions I am interested in, but I cannot access the raw pointer from a git2 object because Binding is not being publicly exported by the crate.

How does exporting this trait sound? It would allow for an escape hatch to be able to interact with libgit2-sys.

[wiiznokes]

i'm interested in the raw::git_libgit2_opts function. It would be nice to add a feature like "raw", to reexport libgit2-sys, to avoid version mismatch and convenience. +1