added kpath code
working pathenc2 with decode version
cleanned up code a bit
added unused
go fmt, more code cleaning
more clean up
added profiling; comments
use shift kmer
kpath
fixed shift
fixed mask
fixed read ref
fixed yet one more bug
switched read flip code to use shift
removed last context
tracking down file increase size
debug flipping...
working on flips
faster version
added go routines for parallelism