Introduce `Semver` on `FaultDisputeGame` + `DisputeGameFactory`

packages/contracts-bedrock/.gas-snapshot

@@ -39,8 +39,8 @@ FaultDisputeGame_ResolvesCorrectly_IncorrectRoot2:test_resolvesCorrectly_succeed
 FaultDisputeGame_ResolvesCorrectly_IncorrectRoot3:test_resolvesCorrectly_succeeds() (gas: 503574)
 FaultDisputeGame_ResolvesCorrectly_IncorrectRoot:test_resolvesCorrectly_succeeds() (gas: 491581)
 FaultDisputeGame_Test:test_defendRoot_invalidMove_reverts() (gas: 13250)
-FaultDisputeGame_Test:test_extraData_succeeds() (gas: 17409)
-FaultDisputeGame_Test:test_gameData_succeeds() (gas: 17834)
+FaultDisputeGame_Test:test_extraData_succeeds() (gas: 17448)
+FaultDisputeGame_Test:test_gameData_succeeds() (gas: 17873)
 FaultDisputeGame_Test:test_gameStart_succeeds() (gas: 10337)
 FaultDisputeGame_Test:test_gameType_succeeds() (gas: 8216)
 FaultDisputeGame_Test:test_initialRootClaimData_succeeds() (gas: 17691)

packages/contracts-bedrock/contracts/dispute/DisputeGameFactory.sol

@@ -8,10 +8,10 @@ import { ClonesWithImmutableArgs } from "@cwia/ClonesWithImmutableArgs.sol";
 import {
     OwnableUpgradeable
 } from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
+import { Semver } from "../universal/Semver.sol";
 
 import { IDisputeGame } from "./interfaces/IDisputeGame.sol";
 import { IDisputeGameFactory } from "./interfaces/IDisputeGameFactory.sol";
-import { IVersioned } from "./interfaces/IVersioned.sol";
 
 /// @title DisputeGameFactory
 /// @notice A factory contract for creating `IDisputeGame` contracts. All created dispute games
@@ -19,7 +19,7 @@ import { IVersioned } from "./interfaces/IVersioned.sol";
 ///         time of the dispute game is packed tightly into the storage slot with the address of
 ///         the dispute game. This is to make offchain discoverability of playable dispute games
 ///         easier.
-contract DisputeGameFactory is OwnableUpgradeable, IDisputeGameFactory, IVersioned {
+contract DisputeGameFactory is OwnableUpgradeable, IDisputeGameFactory, Semver {
     /// @dev Allows for the creation of clone proxies with immutable arguments.
     using ClonesWithImmutableArgs for address;
 
@@ -37,7 +37,7 @@ contract DisputeGameFactory is OwnableUpgradeable, IDisputeGameFactory, IVersion
     GameId[] internal _disputeGameList;
 
     /// @notice constructs a new DisputeGameFactory contract.
-    constructor() OwnableUpgradeable() {
+    constructor() OwnableUpgradeable() Semver(0, 0, 2) {
         initialize(address(0));
     }
 
@@ -48,12 +48,6 @@ contract DisputeGameFactory is OwnableUpgradeable, IDisputeGameFactory, IVersion
         _transferOwnership(_owner);
     }
 
-    /// @inheritdoc IVersioned
-    /// @custom:semver 0.0.2
-    function version() external pure returns (string memory) {
-        return "0.0.2";
-    }
-
     /// @inheritdoc IDisputeGameFactory
     function gameCount() external view returns (uint256 gameCount_) {
         gameCount_ = _disputeGameList.length;

packages/contracts-bedrock/contracts/dispute/FaultDisputeGame.sol

@@ -2,13 +2,13 @@
 pragma solidity ^0.8.15;
 
 import { IDisputeGame } from "./interfaces/IDisputeGame.sol";
-import { IVersioned } from "./interfaces/IVersioned.sol";
 import { IFaultDisputeGame } from "./interfaces/IFaultDisputeGame.sol";
 import { IInitializable } from "./interfaces/IInitializable.sol";
 import { IBondManager } from "./interfaces/IBondManager.sol";
 import { IBigStepper } from "./interfaces/IBigStepper.sol";
 
 import { Clone } from "../libraries/Clone.sol";
+import { Semver } from "../universal/Semver.sol";
 import { LibHashing } from "./lib/LibHashing.sol";
 import { LibPosition } from "./lib/LibPosition.sol";
 import { LibClock } from "./lib/LibClock.sol";
@@ -18,7 +18,7 @@ import "../libraries/DisputeErrors.sol";
 
 /// @title FaultDisputeGame
 /// @notice An implementation of the `IFaultDisputeGame` interface.
-contract FaultDisputeGame is IFaultDisputeGame, Clone {
+contract FaultDisputeGame is IFaultDisputeGame, Clone, Semver {
     ////////////////////////////////////////////////////////////////
     //                         State Vars                         //
     ////////////////////////////////////////////////////////////////
@@ -40,9 +40,6 @@ contract FaultDisputeGame is IFaultDisputeGame, Clone {
     /// @notice The root claim's position is always at gindex 1.
     Position internal constant ROOT_POSITION = Position.wrap(1);
 
-    /// @notice The current Semver of the FaultDisputeGame implementation.
-    string internal constant VERSION = "0.0.2";
-
     /// @notice The starting timestamp of the game
     Timestamp public gameStart;
 
@@ -63,7 +60,7 @@ contract FaultDisputeGame is IFaultDisputeGame, Clone {
         Claim _absolutePrestate,
         uint256 _maxGameDepth,
         IBigStepper _vm
-    ) {
+    ) Semver(0, 0, 2) {
         ABSOLUTE_PRESTATE = _absolutePrestate;
         MAX_GAME_DEPTH = _maxGameDepth;
         VM = _vm;
@@ -376,9 +373,4 @@ contract FaultDisputeGame is IFaultDisputeGame, Clone {
             })
         );
     }
-
-    /// @inheritdoc IVersioned
-    function version() external pure override returns (string memory version_) {
-        version_ = VERSION;
-    }
 }

packages/contracts-bedrock/contracts/dispute/interfaces/IDisputeGame.sol

@@ -3,13 +3,12 @@ pragma solidity ^0.8.15;
 
 import "../../libraries/DisputeTypes.sol";
 
-import { IVersioned } from "./IVersioned.sol";
 import { IBondManager } from "./IBondManager.sol";
 import { IInitializable } from "./IInitializable.sol";
 
 /// @title IDisputeGame
 /// @notice The generic interface for a DisputeGame contract.
-interface IDisputeGame is IInitializable, IVersioned {
+interface IDisputeGame is IInitializable {
     /// @notice Emitted when the game is resolved.
     /// @param status The status of the game after resolution.
     event Resolved(GameStatus indexed status);

packages/contracts-bedrock/contracts/dispute/interfaces/IVersioned.sol

-// SPDX-License-Identifier: MIT
-pragma solidity ^0.8.15;
-
-/// @title IVersioned
-/// @notice An interface for semantically versioned contracts.
-interface IVersioned {
-    /// @notice Returns the semantic version of the contract
-    /// @return _version The semantic version of the contract
-    function version() external pure returns (string memory _version);
-}