v2.5.3

* [fix] handle missing API key

v2.5.2

* [fix] CP config menu item was missing (#60)

v2.5.1

* [fix] delay Forma registration (#59)

v2.5

* [new] user registration supported (#57)

v2.4.2

* [fix] improve error handling (#55)

v2.4.1

only include interests if they’re set (closes #54)

v2.4

* [new] Assign Mailchimp Groups

v2.3.6

* [fix] require latest Forma

v2.3.5

* [fix] use new Forma

v2.3.4

* [fix] use new Forma