added availability check before returning list of support currencies (for [bd] Shop)
added more data for callback processing
improved support for [bd] Shop
improved further support for [bd] Shop (with parent transaction id for reverted transaction
fixed bug rejected transaction id without prefix
v1.3.1 -- version bump
added parent::renderHtml check
updated to use template modification for XenForo 1.2 instead of replacing account_upgrades template completely
added check to revoke purchase permission for guest
v1.3.1b -- version bump