v0.5.0

New features

• gambit dist command for calculating distance matrices.

CLI

• Sequence file input
  • Explicitly restrict input to FASTA format only.
  • Files may be gzipped.
  • Read input file lists from text files.
• Minor changes to options of subcommands in signatures group.

API

• gambit.db subpackage:
  • Database-loading funcs moved to class methods of ReferenceDatabase.
  • Additional taxonomy tree methods.
  • Some additional internal reorganization/refactoring.