* Change: In Anabatic::GCell::updateDensity(), all non-passthrough wires
now have a cost of 0.5 instead of 0.33 for locals.
* Change: In Manipulator::canMoveUp(), increase the "reserve" amount to
1.0 for "far from terminal" wires (rpDistance > 2).
* Change: In NegociateWindow::NegociateOverlapCost(), always sets "AtRipupLimit"
when the overlapping segment is nearing it's maximum ripup limit.
(different detection for non-preferred and regular)
* Change: In SegmentFsm::_slackenStrap(), call avoidBlockage() if it is
overlapping a blockage *or* a segment at it's ripup limit. I hope I
didn't create an infinite loop here.
* Bug: In cumulus/plugins/PadsCorona.py, CoreWire._computeCoreLayers(),
the big contact between symbolic and real was badly computed for
east/west (was using width instead of height, bummer!).
In Corona._createCoreWire(), completly screwed computation of the
side gap, was using a badly initialized value of the "bb" variable.
* Bug: In cumulus/plugins/Chip.py, the computation of the minimal size
for the corona was wrong, do *not* add the size of the pads and
multiply by two as it is done by "inflate". This was forcing the user
to create way to large chips for a given core size.
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