Implement Rack::Builder#use

[megatux]

I want to try Tipi with an existing Roda API app. I use Rack Attack middleware.
First thing I notice is that the use Rack::Attack throws an error

config.ru:7:in load': undefined method use' for Tipi::RackAdapter:Module (NoMethodError)

Is because the Rack::Builder#use is not implemented?

Maybe related to #2, too