Closed Feature: Specify additional using namespaces [99]

According to the info in Database.tt, it should be possible to specify an IdentityDbContext base class. While this is technically true, it's only possible by fully qualifying the namespace (Microsoft.AspNet.Identity.EntityFramework.IdentityDbContext).

Please consider adding an option for additional namespace using statements (probably specified as an array).
Comments: Released in v2.11.0