Correct USDC Balance

1. There was a minor discrepancy with the USDC balance after an observation of an inbound to an old vault that was lost.
2. Skip suspended pools in statechecks.

3. There was an issue where multiple pool events with different statuses were sent in the same block, but since the timestamps in the LAST call for the 2 events were identical, the status was incorrectly returned - there's probably a more elegant fix here, my simple hack was to add a sequence so it correctly returns the last status. Reverted, issue created at #46 (closed).