Gravity Forms Constant Contact Add-On 1.6.1

- Updated to process feeds in the background to prevent API issues delaying submission completion.
- Updated to retry token refresh if the request fails before disconnecting.

- Fixed an issue connecting to new Constant Contact apps.
- Updated the connection method to prevent existing apps from breaking as of March 31, 2022

- Fixed a PHP fatal error which can occur during form submission if the contact exists request fails.