harpy v0.6.0

Changed behavior

Instead of using sambamba markdups, harpy now uses samtools markdup -S --barcode-tag BX, which does two great things:

1. uses linked-read barcode information in assessing PCR duplicates
2. marks supplementary (chimeric) reads as duplicates if the primary alignment is marked as a duplicate

What's Changed

• fixes? by @pdimens in #31
• Samtools markdup by @pdimens in #33

Full Changelog: 0.5.0...0.6.0