Backlog

Build a LibGit2Sharp.Sample NuGet package
Maybe : Add to Epoch a DateTimeOffset extension method ToRelativeFormat() in order to show dates relative to the current time, e.g. "2 hours ago". (cf. https://github.com/git/git/blob/master/date.c#L89)
Turn duplicated strings "refs/xxx" into properties of a generic Constants helper type
Refactor the error handling (OutputResult -> Exceptions)
Launch Code Analysis (Issues related to interop and marshaling will be worked on once we're able to succesffully exchange non ascii encoded data with libgit2)
https://bugzilla.novell.com/show_bug.cgi?id=566247 prevents MonoDevelop users from benefiting from optional parameters while still target at 3.5
https://bugzilla.novell.com/show_bug.cgi?id=324680 generates false-positive warnings regarding xml documentation when LibGit2Sharp is built with xbuild
Favor overloads over optional parameters (http://msdn.microsoft.com/en-us/library/ms182135.aspx)
Ensure that types that are not supposed to be built by the Consumer do not expose a constructor.
Escape as early as possible from a method. Fight against the arrowhead effect (cf. http://elegantcode.com/2009/08/14/observations-on-the-if-statement/)

How to integrate LibGit2Sharp in an application (console, web, 32/64 bits...)?
Keep "LibGit2Sharp Hitchhiker's Guide to Git" up to date (cf. https://github.com/libgit2/libgit2sharp/wiki/LibGit2Sharp-Hitchhiker%27s-Guide-to-Git)
Add a complete example (repo init, open repo, stage, commit, branch, ...)

Enforce test coverage of BranchCollection using canonical names, remotes, non existing branches.
Add tests ensuring the behavior of indexers when being passed unknown sha and refs
Add GitObject equality test suite
Add Reference equality test suite
Remove Ignore attribute from ReferenceFixture.CanMoveAReferenceToADeeperReferenceHierarchy() once git_reference_rename() is fixed
Remove Ignore attribute from ReferenceFixture.CanMoveAReferenceToAUpperReferenceHierarchy() once git_reference_rename() is fixed