Implemented MaglevRecord::Validations which later (after commit) includes ActiveModel::Validations.
Moved test_reset from test_validation to test_query_interface.
More intelligent MaglevRecord::Validations now captures all validation calls via method_missing.
Fixed Sensible test.
Fixed bugs in create_validation implementation (e.g. resetting it to nil after including).
Merge remote-tracking branch 'origin/develop' into niccokunzmann/automigration
example model now redo_include_and_extend