except now we calculate the max size using the maxPacketMsgSize()
function, which frees developers from having to know amino encoding
details.
plus, 10 additional bytes are added to leave the room for amino upgrades
(both making it more efficient / less efficient)
* crypto: Abstract pubkey / signature size when known to constants
* Created PubKeyEd25519Size as 32
* Created PubkeySecp256k1Size as 33
* Created SignatureEd25519Size as 64
* Remove extraneous message from changelog
