Sample package 2.0 contract

RepoPackage.sol

contract RepoPackage {
  event NewVersion(uint256 versionId, uint16[3] semanticVersion);

  struct Version {
    uint16[3] semanticVersion;
    address contractAddress;
    bytes contentURI;
  }

  mapping (bytes32 => Version) versions;

  function newVersion(uint16[3] _newSemanticVersion, address _contractAddress, bytes _contentURI) public {
    versions[semanticVersionHash(_newSemanticVersion)] = Version(_newSemanticVersion, _contractAddress, _contentURI);
  }

  function getBySemanticVersion(uint16[3] _semanticVersion) public view returns (uint16[3], address, bytes);
    Version storage version = versions[semanticVersionHash(_semanticVersion)];
    return (version.semanticVersion, version.contractAddress, version.contentURI);
  }
  
  function semanticVersionHash(uint16[3] version) internal pure returns (bytes32) {
    return keccak256(abi.encodePacked(version[0], version[1], version[2]));
  }
}