Changes

v0.3.0

Modernize project to work well with newer Rake, and in the world of Bundler.
Formalize development environment, and fix broken tasks.
Don't leave file handles open needlessly.
Make all path additions recursive. (Incl. allowing more-specific definitions earlier on to override definitions later on...)
Allow specifying multiple paths to be grouped into one line item.
Normalized mechanism for configuring things.
Substantially simplify code.
Add a proper changelog.
Don't add development-dependencies to gem; let people use git clone for that.
Improve Cucumber support by treating Given/When/Then matcher blocks as methods. (Analogous to how should/it methods were already treated.)
Reduce namespace pollution in both rake task namespace, and Ruby global namespace.