Easy Digital Downloads - Checkout Fields Manager 2.2.1

Fix: Unable to save custom fields to user metadata when using Auto Register.
Fix: Unexpected results when a user and payment have the same ID.
Fix: Unnecessary <span> element being added to the user info fieldset.
Refactor: Update functions used for the Commissions integration.
Dev: Compatibility with EDD 3.0.

Fix: Repeatable field values not displaying if the user only enters one value.
Fix: PHP warnings on PHP versions 7.2 and higher.
Fix: Label not correctly associated with email field.
Dev: Compatibility with EDD 3.0.

* Fix: Google reCaptcha wasn't always loading when it should due to a race condition.