Second revision

This release contains an important bug fix and some changes to the output files

New features:

• Available as a conda package (#31)
• Plots are now plotted in terms of pi_n and a, rather than in the arbitrary scaled space (#32)
• Easy run mode now uses HDBSCAN and fit refinement, a more intuitive default (#34)
• Min and max k-mer sizes set as noted in paper

Bug fixes:

• Clusters are output in reverse frequency order, in every mode (#33)
• Use of databases with reference only (i.e. without --full-db) work with future --assign-query commands (#35)
• Parsing of CSV column headers for microreact output fixed for some cases