add test
coding algo
dot dump + first fix in weight queue
begin matching nodes
recursively match nodes; use simple labels
begin creating actions
generation of actions seems ok
begin mapping actions to patches + add test files
handle MoveRank and use rank to order matching candidates
first test works
update test
continue testing new implementation
fix move rank + update tests
fix move rank, update tests
debug mode with env var XMLDIFF_DEBUG=1