cleaning part1
dsl set/get validations
dsl set/get validations
dsl set/get validations for other models
load attrs on init
persistent and modified flags
saved objects
save and delete
corrections in exist and enforce
test_find
use validation_errors not @errors internally
skeleton for load
round trip new-save-test-delete
delete loads missing attributes to perform a complete delete
test find load_all attributes
test find load some attributes
better structure for tests
test update
free array values, only can be updated as a whole
persistent/retrieval multiple values