Less is more

• Major feature - input FASTQ will be subsampled to 50x (or --depth) to reduce burden of all following steps. Increases speed a lot.
• Output fasta now has 60 characters per line
• New --namefmt to name contigs how you want it, e.g. --namefmt "EcK12.%04d.final"
• Now --help returns $? -eq 0 as it should.