1.0.1     2017-03-24 17:56:55+00:00 Europe/London
 - fix list headers:
   * list headers are structured, should never be encoded
   * they can have comments
   * each header can have multiple values
   * 'post' can be set to a false value to indicate a no-post list

1.0.0     2017-03-16 17:45:48+00:00 Europe/London
 - first release