mostly style fixes with a few small bugfixes: default table sep changed to tab; broken kegg level option fixed; multi-outputs sourted for consistency between runs
mostly style fixes with a few small bugfixes: default table sep changed to tab; broken kegg level option fixed; multi-outputs sourted for consistency between runs

jmeppley/py-metagenomics,jmeppley/py-metagenomics,jmeppley/py-metagenomics