7.0.1

CHANGES:

• dns-server.zone: fix parsing of zone files that contain tokens such as
  N S E W -<number> <number>m DS CAA TYPE<number>.
  There was an inconsistency in the Dns_zone_parser.keyword_or_number rule.
  Test cases have been added, a comment has been added to the
  Dns_zone_lexer.kw_or_cs function. Discovered while updating the primary NS
  with an entry of "e.ns", fixed in #336 @hannesm
  Broken since the early days of this development