add the dot I used to validate the read_api is correct for the graph functions... I should probably make a more complex graph for testing corner cases
fixed nearest common ancestor to completion if one node terminates early
fixed expanding visitor to handle zero padding correclty, and added test case for it; so now "test0001..20" correctly expands to test0001,test0002,...,test0019,test0020
fix test for change to graphdb::remove; should have gone in with that change
the ugliness continues; if horrible code causes you physical pain, I would suggest not reviewing this file right now
update gitignore to allow the dot file