Martin von Zweigbergk <martinvonz@google.com> [Wed, 04 Feb 2015 22:40:48 -0800] rev 24045
obsolete: pass only new markers to _checkinvalidmarkers()
We will soon delay populating precursors until we have to. To prepare
for that, make _checkinvalidmarkers() scan for a nullid precursor in
the list of new markers instead of the (currently) cheaper 'if nullid
in precursors' check.
Martin von Zweigbergk <martinvonz@google.com> [Tue, 20 Jan 2015 22:01:37 -0800] rev 24044
obsolete: extract helpers from _load()
In preparation for making the successors, precursors, and children
dictionaries lazily populated, break up _load() into one function for
adding markers to each dictionary.