consider using more efficient solidity proto libraries

[hxrts]

from @adlerjohn:

They encode to storage, not memory https://github.com/datachainlab/ibc-solidity/blob/e5c5e622877e1c6c5269b4238889007dd135be13/contracts/core/types/ProtoBufRuntime.sol#L21
i.e. it'll cost like a billion gas to do anything. If you know them, tell them to use and contribute to my library!

1. https://github.com/lazyledger/protobuf3-solidity-lib
2. https://github.com/lazyledger/protobuf3-solidity

[bluele]

Thanks! We are currently using the encode function(e.g. this impl) generated by the generator instead of encodeStorage, but we would like to check the possibility that the lazyledger implementation might be more efficient.