increased the range of the saddle point interaction.
implemented new reaction update flags for new saddle point model
implemented so that adding removing particles now has an increased range
for influencing neighbors reactions
fixed a bug where the last saddle contributors was missing due to a
missing = in the comparisons. Fixed a bug where no neighbors was set to
indicated zero saddle energy. This is no longer known.
Implemented thuril testing of all saddle energies and their updates.
working on getting all tests to pass (except seq. and knowncase which is
broken)