Add gitaheadPatchesLibGit2.txt

gitaheadPatchesLibGit2.txt

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+# blame: fix update from buffer
+remote: add callbacks for connect/disconnect
+- implemented into gittyup branch of libgit2
+
+# hash: changed git_repository_hashfile to hash symlinks the same as when they are added to the index
+
+# submodule: pass absolute path to clone
+The init callback worked because it uses the parent repo path to contruct
+distinct repo and working directories, but the tests for an existing empty
+directory in git_clone were relative to the current working directory
+instead of the parent repository directory.
+
+# submodule: changed git_submodule_status to take a submodule instead of a repo and name
+- not needed anymore!
+
+
+# patch: add context lines accessor
+- implemented into gittyup branch of libgit2
+
+# patch: add owner accessor
+- already upstream
+
+
+# patch: added flag to disable mmap
+- really needed?
+
+# push: fixed several update callback issues
+# Update callback is no longer called (and the reference isn't updated) when the
+# local and remote oids already match. The update callback is now called for tags.
+# Finally, fixed a leak when there are multiple refspecs.
+
+
+# diff: initialize git_diff_options.context_lines to an invalid default value and read 'diff.context' when the value is invalid
+
+# checkout: notify for deleted files
+- implemented into gittyup branch of libgit2
+
+# blame: disable rename detection
+- really needed?
+
+# blame: add blame progress callback
+- implemented into gittyup branch of libgit2
+
+# fetch: work around failure to fetch annotated tags added to existing commits
+- implemented into gittyup branch of libgit2