Checklist of things i'm working on

[samliok]

• Only verify a block if we received & verified the empty notarizations it builds off
• Request empty notarizations if missing in handleBlockMessage (only request once from sender)
• Request missing notarization/finalization in handleBlockMessage if missing previous block (only request once from sender)
• Keep empty notarizations in memory until a higher round has been finalized
• Rebroadcast Bug Issue Rebroadcast Bug #290
• Replicate chains rather than rounds
  • Allowing notarizations and empty notarizations for the same round to be collected & processed.
  • Process past rounds (highestFinalizedRound > x > e.round)
  • if !IsReadyToBeScheduled during processNotarizedBlock then we must be missing a notarization for a round
  • if !IsReadyToBeScheduled during processFinalizedBlock then this signifies a bigger issue(since we have a finalization for nextSeqToCommit but can't find the current seq in the epoch).
  • Create tests for this
• PR to un-synchronize LevelDB compactions(avalanchego)
• Scheduler Refactor
• Cleanup Orphaned Blocks Issue