fix gather output bug (#589)
add a '--rna' option (#585)
allow all ksizes for protein input (#576)
cleanup and tests for sourmash.lca.lca_utils (#429)
add --scaled to sbt index to downsample signatures (#378)
Refactor and clean up gather code (#517)
fix downsampling printout (#584)
add lca DBs as inputs to 'sourmash search' and 'gather' (#533)
use setuptools_scm for version management (#471)
fix divide by zero issue in MinHash.contained_by (#572)
add gather csv column meanings (#553)