(1) create a new table "structfieldstorage_revisions_binding" to track the...

(1) create a new table "structfieldstorage_revisions_binding" to track the correspondence between internal drupal timestamp, and structWSF revisioning URIs
(2) Change how loading, deletation and creation of revisions works with this new table
(3) implements hook_revisionapi() to handle when revisions get published/unpublished