Rugged 0.22.1b1

Changes since Rugged 0.21

• Add Rugged::Tree#count_recursive.

This counts all blobs in a tree, recursively, with an optional limit
to bail early. This allows asking things like: "Are there more
than 1 million files in this repo?" in a very performant way.

Fixes #464.

Andy Delcambre

• Update bundled libgit2 to 0.22.1.

See https://github.com/libgit2/libgit2/releases/tag/v0.22.0 and
https://github.com/libgit2/libgit2/releases/tag/v0.22.1 for a list
of fixed issues and new features.

Arthur Schreiber

• Add missing handling of libgit2 errors in Rugged::BranchCollection#each
  and Rugged::BranchCollection#each_name.

Fixes #457.

aiionx

• The Rugged::Tree::Builder API was changed to account for libgit2 changes.

When creating a new Rugged::Tree::Builder instance through
Rugged::Tree::Builder.new you have to pass a repository instance,
while Rugged::Tree::Builder#write does not take any arguments anymore.

Vicent Martí

• Add alternative backend support (experimental).

Bare repositories can now be stored using an alternative backend.

Fixes #410.

Viktor Charypar

• Replace Remote#rename! with RemoteCollection#rename.

This brings the RemoteCollection more in line with the API of
ReferenceCollection and BranchCollection.

Arthur Schreiber

• Remove URL validation from Remote#url=, Remote#push_url=,
  RemoteCollection#create_anonymous and RemoteCollection#create,
  as the underlying function git_remote_supported_url() was removed
  from libgit2.

Arthur Schreiber

• Add Repository#merge_bases.

This returns an array containing all merge bases between one or
multiple commits.

Arthur Schreiber

• Add submodule support.

Expose git submodules functionality through Rugged::Submodule and
Rugged::SubmoduleCollection.

Nikolai Vladimirov

• Add Rugged::Walker#push_range.

Evgeniy Sokovikov

• Implement Rugged::Blob::HashSignature and Rugged::Blob#hashsig.

Allows similarity detection of Rugged::Blob instances against other blobs or
arbitrary strings.

Vicent Martí

• Add Rugged::Repository#attributes.

This method allows accessing the attributes for different path names as
specified by .gitattributes files.

Vicent Martí

• Add Rugged::TagCollection#create_annotation.

This method allows the creation of a tag object, but without creating
a tag reference.

Charlie Somerville

• Add Rugged::Repository#cherrypick.

Arthur Schreiber

• Add Rugged::Repository#descendant_of?

Jake Douglas

• Rugged::Index#read_tree now actually checks that the given object is a
  Rugged::Tree instance.

Fixes #401.

Andy Delcambre

• Add Rugged::Repository#expand_oids.

This allows expanding a list of shortened SHA1 strings, optionally restricting
the expansion to a specific object type.

Vicent Martí

• Add Rugged::Remote#check_connection.

This is useful if one needs to check if it is possible to fetch/push
from/to the remote.

Basically, it is analogue to git fetch --dry-run and git push --dry-run.

Dmitry Medvinsky

• Remove defunct Rugged::Diff::Line#hunk and Rugged::Diff::Line#owner.

Fixes #390.

Arthur Schreiber

• Remove Rugged::Diff#tree and change Rugged::Diff#owner to return the
  repository that the Rugged::Diff object belongs to.

We need to keep a reference from the Rugged::Diff to the repository to
ensure that the underlying libgit2 data does not get freed accidentally.

Fixes #389.

Arthur Schreiber

• Add #additions and #deletions to Rugged::Patch.

Mindaugas Mozūras