…upport::Concern will be no longer included automatically. Please define instance methods directly in ActionView::Base instead.
…assets pipeline would take a lot of time. So for now, I am going to loose a little the rails version requirement, so if you decide to use themes_for_rails with rails 3.1.x, the only thing you will need to do is to disable the assets pipeline. When I have some time to spend on analyzing the Sprockets API, there will be a themes_for_rails version that will take advantage of this technology.