Bug fixes

First stable release, fully drush8 and drush9 compatible and with test coverage.

First stable release - has been working for a long time now :)

Bug fixes
Critical issue:
#2994187 PHP5.6 compatibility - Error: syntax error, unexpected '?' in multiple_registration.module line 200

Some minor issues fix.

New module (node_delete):
This module allow you to unpublished/delete node on expiry date.

Initial release of the dvf module and accompanying ckan_connect module