Release 0.2.8

This is mainly a bugfix release fixing a UnicodeEncodeError when writing to a
--metadata-table file with non-ASCII entries like in record GCF_000234725.1.

Thanks to @danudwary and @jananiravi for the error reports.

Also thanks to Tessa Pierce and Joe Healey for their contributions.

Detailed changes:

Joe Healey (1):
      update readme with conda install

Kai Blin (3):
      config: Change a tab indent to spaces
      core: Open metatable file with utf-8 encoding
      Bump version number to 0.2.8

Tessa Pierce (1):
      add support for rm (repeat masked) eukaryotic genomes