collect some basic stats while segmenting
add simple segment interpolation using mode
add fgenes and gc tracks to clean list.  update ltrfinder to combined harvest and finder
Merge branch 'development' of github.com:glennhickey/teHmm into development
add track ranking script
add saveallreps option
fix bad typo in segment length correction in viterbi row 0
make seg thresh 0 when only few tracks. add readme blurb
fix typo in help
tweak seglen default
update track lists.  in partiular, add new lastz self alignments and ltrharvest
remove sequence track from clean working tracks