use a vector for each :namespace,schema pair
use a vector for each :namespace,schema pair
update comments
move init of schematode constraint features into init-schematode! fn
move constraints tests into correct file
Complete first complete version of constraint features.

* :schematode-tx with support for :warn and :enforce
* constraint application costs calculated and asserted in
  :schematode-constraint/elapsed-msec on the TX entity
* :schematode-tx* for direct use without d/transact