License currently has an all_features boolean flag that turns on all features in the codebase. The new feature multi-organization should not be entitled by the current enterprise licenses. To support a new set, called "premium", that includes multi-organization, the new license will support a new field feature_set.

The first two feature sets will be "enterprise" and "premium". Premium will always be a super set of "enterprise". Legacy licenses will be equal to the feature set "enterprise".