* New: In Anabatic::Edge::ripup(), sort edges to ripup by decreasing
length so the longest gets riped up first.
In two metals mode, ripup all segments *except* those who have
terminal contact in the GCell, because they must use it anyway.
* Bug: In Anabatic::GCell::getEdgeAt(), the size hint flag was not
correctly selected, leading to the use of an edge in the wrong
side. So deleted segments where not deleted from their edges,
leading to core dump. Don't understand how it can have not shown
until now.
* New: In KatanaEngine::annotateGlobalGraph(), for two metal gauges,
decrease the edge capacity on both north and south side for each
terminal in the GCell. As a terminal must be accessed through
north or south it blocks the whole vertical track (hence both
edges).
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