biology/bioawk: BWK awk modified for biological data

Bioawk is an extension to Brian Kernighan's awk, adding the support of several
common biological data formats, including optionally gzip'ed BED, GFF, SAM,
VCF, FASTA/Q and TAB-delimited formats with column names. It also adds a few
built-in functions and an command line option to use TAB as the input/output
delimiter. When the new functionality is not used, bioawk is intended to behave
exactly the same as the original BWK awk.