Changed default tracking params.
MPEPrec/MPECoverage/MPEF1 are now Prec/Coverage/F1.
Changed default AbdExp params.
Fixed a bug in abdexp related to trying to observe a set of vertex states that have inconsistencies.
In abdexp, create probabilities for vertex states with less of a span.
Instead of last commit, create a bigger range of probabilities in abdexp vertices.
Small bug in last commit.
Faster related-hyps checking (limit to accepted/rejected-due-to-conflict).
Don't let tracking hypothesize hyps without an apriori greater than 0.01.

This drastically reduces the number of hyps, without an apparent cost in accuracy.
Changed default tracking params.
Normally, don't calculate hyp relatedness (it's slow).
Bugfix with the earlier change from MPEPrec/etc. to Prec/etc.
Make abdexp initial probs more uniform (and confusing).
Added VirtualScores and VirtualScoresTruthiness to use scores computed from a Gaussian.
Removed debugging statement.
Support score & delta (not weighted) :DoubtMeasure.
Added param for abdexp, :OnlyCompleteExplainers
Revised virtual scoring technique to use "bins".
Fixed stack overflow in classify-error function.
Changed defaults for virtual scores.