* Deprecated method ``find_previous_heads`` on
``bzrlib.inventory.InventoryEntry``. This has been superceded by the use
of ``parent_candidates`` and a separate heads check via the repository
API. (Robert Collins)
* New public method ``heads`` on the ``bzrlib.graph.Graph`` class. This is
a simple rename of a previously internal method which implements the same
semantics as heads(). (Robert Collins, John A Meinel)