amptk v0.8.5

• bug fixes for pre-processing steps where short primer-dimers could make it through filtering, get padded with N's and get incorporated as OTUs in clustering
• update to amptk filter to output the final OTU table to have real read counts as opposed to "pseudo" counts from normalization. Filtering is done with normalization, but now read counts are restored to original read numbers. Important for downstream stats like beta diversity
• improved read summary reporting in pre-processing steps
• update to amptk unoise2 to output both inferred or denoised sequences/tables as well as biological OTU sequences (clustered at 97%).