Minimum webform_civicrm version supported is now 7.5-5.1

docs/integration.md

@@ -9,7 +9,11 @@ The Stripe extension works with Drupal Webform + Webform_civicrm.
 You must enable the [contributiontransactlegacy](https://github.com/mjwconsult/civicrm-contributiontransactlegacy) CiviCRM extension which replaces the Contribution.transact API with a working one. In the
 future we hope that webform_civicrm switches to a supported API.
 
-Minimum version: 7.x-5.0.
+Minimum version: 7.x-5.1.
+
+#### Known issues
+
+If using multiple payment processors test mode will not work on webform.
 
 #### Recurring Payments