Change extend heuristic
add steps option to bnechmark
Add transitive option to make levels of detail from previous levels of detail instead of original
change keepSequences to maxDNA option to allow more finegrained control of which levels of detail get a sequence
Mody lodmanager to be sensitive to which lods have sequence or not.  blockviz api adjusted to always look for the best LOD with sequence when the getsequenceflag is provdied
reduce refgap in maf export for no good reason
fix bug where --ucscnames option was getting lost
fix case for sliced segments in mapper ordering.  should be very fringe but need it for the unit tests