don’t keep track of the ruby and gem sets
add very simple tests to ensure we are notified if API changes
Inject the “User.is_mail_list_subscriber” attribute into the
RegistrationController’s strong_params  hash introduced via
https://github.com/spree/spree/commit/64ad1d1df46439a8d1603830140d757c9be9f588

This should fix the issue when user adds themself to
email list when they create their spree account.