Add Repository.Stashes.Add
Add Repository.Stashes.GetEnumerator()
Add implicit cast from GitOid(?) to ObjectId

Also, support marshaling NULL in OidSafeHandle
Use implicit GitOid to ObjectId cast everywhere
Give props to Jon Skeet

Add link back to source Stack Overflow post for the CopyStream
method after obtaining permission from Jon Skeet to include in
LibGit2Sharp.
Throws when HEAD is missing

Fix #351
Revert "Remove useless GC.SuppressFinalize()"

This reverts commit d03bcb995993867f9260f32786ca25d6071d563d.

cf. http://msdn.microsoft.com/en-us/library/ms182269.aspx
Allow commits on any unparented branch
Obsolete IsEmpty property on RepositoryInformation
Remove sample hooks
Handle dot_git in DirectoryHelper
TemporaryCloneOfTestRepo does not need to inherit from SCD
Support additional paths with temp clone
Add submodule test wd
Add Submodule bindings
Add explicit cast from string to ObjectId
Add Repository.Submodules
Add submodule support to Index.Stage()

Fix #220
Add missing XML comment
WIP - Submodule mutation