Feature request: should be possible to output a fasta file, not one sequence per line

[wwood]

This seems like the obvious use case to me, but of course it is relatively easy to workaround. For instance:

$ fastahack -c my_index <ids.txt >sequences.txt
$ paste ids.txt sequences.txt |sed -e 's/^/>/' -e 's/\t/\n/' >sequences.fa