Started working toward Rails4 compatibility.
Update to fix deprecation in has_many.
Update to fix deprecation in default_scope.
Allow CI on rails4
Don't test on 1.8.7 and only notify me
Support has_many in a backwards compatible way.
Lock to minitest 3.2.0 for now because 3.3.0 is erroring.
Remove superfluous .all which was producing deprecation warnings.
Set rails4 compatible dependencies.