0.5.1

Minor update. Improves detection of duplicate reads with paired end reads, reduces run time with dedup --output-stats and a few simple debugs.

• Improved identification of duplicate reads from paired end reads - will now use the position of the FIRST splice junction in the read (in reference coords) (#187)
• Speeds up dedup when running with --output-stats - (#184)
• Fixes bugs:
  • whitelist --set-cell-number --plot-prefix -> unwanted error
  • dedup gave non-informative error when input contains zero valid reads/read pairs. Now raises a warning but exits with status 0 (#190, #195)
  • count errored if gene identifier contained a ":" (#198)
• Renames --whole-contig option to --buffer-whole-contig to avoid confusion with per-contig option. --whole-contig option will still work but will not be visible in documentation (#196)