Changes

ATTR depends on the PTYPE. But you must have '''gramps_target_version''' and addon '''version'''. '''gramps_target_version''' should be a string of the form "X.Y" version number matching Gramps X major, Y minor integer. '''version''' is a string of the form "X.Y.Z" representing the version of your addon. X, Y, and Z should all be integers. Be sure to include attributes for author name(s) and email(s) in the form of an array of comma-separated strings. There is an additional set of attributes, '''maintainers''' and '''maintainers_email'''. If you, the author, are also the maintainer it will be identical to the author attributes, but you may also designate a maintainer, in which case the maintainer will become the primary point of contact.