Added support and tests for primary keys to not be called "id"
support for running rails 4 under both 1.9.3 and 2.0.0
Use Gem::Version. 'cuz, CHAW, everybody's doing it these days, srsly.
make a clearer "parallelism_is_broken" assertion
massive headbanging. AWESOME FUN
extricated the tag examples into their own thing, so we can use shared_examples_for properly. Renamed stuff to not be "Tag (1)" and "Tag (2)" (srsly, people). Made the UUID Tag test be a legit class, instead of the crazytown shite that we were doing before of reusing the Tag class because we didn't know about "described_class" with rspec.