Gas Optimizations

[code423n4]

Optimization #1 - These variables can be set to immutable

These variables are only able to be set in the constructor. Making them immutable will save gas when reading.

https://github.com/code-423n4/2022-05-cudos/blob/de39cf3cd1f1e1cf211819b06d4acf6a043acda0/solidity/contracts/Gravity.sol#L59-L61

Optimization #2 - This variable can be set to CONSTANT

https://github.com/code-423n4/2022-05-cudos/blob/de39cf3cd1f1e1cf211819b06d4acf6a043acda0/solidity/contracts/CosmosToken.sol#L5

Optimization #3 - For loop optimization

All for loops found in gravity.sol can be optimized by incrementing i within unchecked{}. The new pattern would be:

    for (uint i = 0; i < length;) {
        doStuff();
        unchecked {
            ++i;
        }
    }

https://github.com/code-423n4/2022-05-cudos/blob/de39cf3cd1f1e1cf211819b06d4acf6a043acda0/solidity/contracts/Gravity.sol#L453-L456