- Do not create new levels of fanout when creating notes from libgit2
- Insert a note in an existing matching fanout
- Remove a note from an existing fanout
- Cleanup git_note_read, git_note_remove, git_note_foreach, git_note_create methods in order use tree structures instead of tree_oids
This commit adds basic git notes support to libgit2, namely:
* git_note_read
* git_note_message
* git_note_oid
* git_note_create
* git_note_remove
In the long run, we probably want to provide some convenience callback
mechanism for merging and moving (filter-branch) notes.
Signed-off-by: schu <schu-github@schulog.org>