added --[no]utax option to specify if utax should be used for classification
added --[no]utax option to specify if utax should be used for classification

iimog/meta-barcoding-dual-indexing,molbiodiv/meta-barcoding-dual-indexing,molbiodiv/meta-barcoding-dual-indexing,iimog/meta-barcoding-dual-indexing,iimog/meta-barcoding-dual-indexing,molbiodiv/meta-barcoding-dual-indexing