CanTango has a dependency on Devise in the Gemfile so bundler should
fetch devise when you run bundle install.
Yes, this is more or less a total replacement. We might include an
extra layer on top in the future (project Dancing) with more advanced
generators if the demand is there. But from my experience with Cream,
I'm not sure its a good idea to add too much complexity too soon
without it having been tested out and requested! Hope you find that
CanTango suits your needs. Please give feedback and/or come up with
your own extensions and patches. Thanks!