The intent of this is to allow for simulating things like slashing for not
voting on a governance proposal. To test this, you would queue all the validator votes
in future blocks, and keep track of which ones you didn't slash. Then you could add queue a
"check governance slashing operation" after the voting period is over.
* This demonstrates that the state machine is non-deterministic if there
are more than two txs in a block.
* fix non-deterministic map iteration
* (squash this) fix build errors
* (squash this) iterate using range