Allow naming of barcodes
Improved barcode loading
Allow comments in barcodes.txt
BUG: Fix load_barcodes()
BUG: Slice quals, not just sequence of FASTQ record
Relocate fast_fastq into own file and use native slicing
Checking in scripts up to taxon tally
Added hashbangs, changed perms
Updated python path to work on atacama
Add multithreading to USEARCH
Several small changes
* Default identity 97 -> 95
* Write tally output to output directory instead of STDOUT
* Capitalize fasta -> FASTA
Change default output directory to cwd