implemented filter-abund-single; renamed abundance-hist-inmem to abundance-hist-single
fixed permissions on filter-abund-single
Add doxygen support
removed unnecessary screed.fasta import from several scripts
convenience functionality for mrnaseq tutorial
strip-and-split now outputs fq appropriately
updated filter-abund to deal with variable coverage; added tests, docs
removed obsolete @CTB
added fp rate output
merge khmer-counting optimization work