solidity-library
solidity-library contains multiple libraries from respected owner.
here lists of libraries include in this reporsitory
DateTime.sol -> https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary StringUtils.sol -> https://github.com/Arachnid/solidity-stringutils SafeMath.sol -> https://github.com/OpenZeppelin/openzeppelin-contracts SafeMathUpgradeable.sol -> https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable