MATSim Code

Removed static variable.

Added vkt estimator, with tests.

Rosenbrock search

simplify code and always look at 4 children before diving in

only expand/contract in the step direction, and put a minimum step size

better priority

look at children in the order they are generated
otherwise, process focuses on degree...

clean imports

output preprocessed network and synchronize foll add method

cannot just lock entry on which we are working, as addition on entries
are co-dependent...

re-activate redundancy reduction

was commented out only to discard one possible cause of problems while
testing