June 20, 2023 - added new "token" value that can be sent with the user as a query string and that will be returned in the webhook payload.
May 16, 2018 - added new call to get domain information and updated the output for vouchers.
November 25, 2016 - numerous updates for clarity around Hover Connect Partner Platform options, added additional information about the Live and Sandbox Vouchers API endpoints.
October 14, 2016 - Switched API endpoint for the Vouchers API to the test system (https://www.ted.hover.com)
October 4, 2016 - Added new section for the optional webhook and new %email% parameter.
August 3, 2016 - Changed "days_valid" optional parameter in Issue a new Voucher to "days".
June 3, 2016 - Added callback_url optional parameter to the call to Issue an new Voucher.
May 18, 2016 - Added additional Partner information and Hover Enhance links.
May 12, 2016 - Initial publication including Vouchers API.
