title: Can you change a state without going through the upgrade process?
body: <p>If I had contract and state classes placed into two different cordapp jars. </p>
  
  <p>I believe if I change the contract instead, old state object references the old contract attachment by hash will throw out an error of <code>ContractConstraintRejection</code>. </p>
  
  <p>But if it's the other way around, when I change the state, i.e add a new parameter. Will it impact the anything? </p>