• If this is a stakeable transaction (Add Validator and/or Add Delegator) then have StakeableLockOut come before SECPTransferOutput so that users first stake locked tokens before staking unlocked tokens. Also sort the StakeableLockOuts by StakeableLocktime so that the greatest StakeableLocktime are spent first.
• Add unit tests to capture changes. In these tests we confirm that the utxo w/ the largest stakeable lock time are fully consumed and then a fraction of the other uxtos are consumed.
• Replace travis with github actions.