Expose method to clear the index
Revert should clean up repository state when there is nothing to revert

If reverting with the option to commit on success, and the revert
completes successfully but there are no changes to commit, then
revert will clean up the revert operation in progress state and
the RevertStatus will indicate that there was nothing to revert.
Revert should throw if HEAD branch is orphaned
Deprecate repo.Refs.Move() in favor of repo.Refs.Rename()

Fix #752
Add missing public method xml documentation
Remove optional parameters from IRepository

Fix #779
Deprecate repo.Version in favor of GlobalSettings.Version

Fix #726
Adds support for nCrunch.
Make BuildSignature() throw a descriptive message

When global user.name or user.email is set to an empty value, it will
now throw a LibGit2SharpException with proper explanatory message.
Previously it would throw an ArgumentException with obscure message:
"String cannot be empty\nParameter name: name".
Use a build properties file instead of custom build actions to copy native binaries
Branch.Remote property should not throw

The Branch.Remote property can throw when it attempts to resolve a remote
for a remote-tracking branch, and the remote cannot be found or is
ambiguous. In those situations, Branch.Remote should return null. If there
is a need for the specific exception to be returned, we can look at
transitioning to a method for this functionality.
Verify that resolving a remote-tracking branch's remote can throw
Introduce MergeFetchHeadNotFoundException

This adds a  strongly typed exception to indicate when a pull is
performed and a reference for the configured merge branch was not fetched.
Update exception message when Pull cannot find ref to merge
Update libgit2 to build with GIT_TRACE

Build libgit2 with tracing information so that we can provide it to
consumers.
Update libgit2 to e0383fa
Introduce logging

Consumers can register a GlobalSettings.LogConfiguration to receive
logging messages from LibGit2Sharp and trace messages from libgit2.
Simplify Travis install phase.
Fix compareOptions handling in Diff.Compare<T>

Fix #827
Drop internal ICredentialsProvider