Extract private methods from Model#create & #destroy
Less constants is better
A lambda with loose arity is just a Proc

Though I shall miss you, spaceship.
Extract constant stubbing from Model
Small readme tweaks
Remove dependency on RSpec

And add installation instructions for minitest/spec
Remove unneeded & complex class_eval when creating model
Pass model initialization block directly when creating class
Ensure the model's constant is set before evaluating the model block
Merge pull request #16 from Casecommons/next

Complete refactor