update licenses (#916)

* update licenses

* Update README.md

Co-authored-by: Alice <[email protected]>

* formatting

---------

Co-authored-by: Alice <[email protected]>
Co-authored-by: Alice Henshaw <[email protected]>

README.md

@@ -98,10 +98,4 @@ contract MyContract is IUnlockCallback {
 
 ## License
 
-The primary license for Uniswap V4 Core is the Business Source License 1.1 (`BUSL-1.1`), see [LICENSE](https://github.com/Uniswap/v4-core/blob/main/LICENSE). Minus the following exceptions:
-
-- Some [libraries](./src/libraries) have a GPL license
-- Both [FullMath.sol](./src/libraries/FullMath.sol) and [Hooks.sol](./src/libraries/Hooks.sol) have an MIT License
-- [Interfaces](./src/interfaces) and [types](./src/types/) have an MIT license
-
-Each of these files states their license type.
+Uniswap V4 Core is licensed under the Business Source License 1.1 (`BUSL-1.1`), see [BUSL_LICENSE](https://github.com/Uniswap/v4-core/blob/main/licenses/BUSL_LICENSE), and the MIT License (`MIT`), see [MIT_LICENSE](https://github.com/Uniswap/v4-core/blob/main/licenses/BUSL_LICENSE). Each file in Uniswap V4 Core states the applicable license type in the header.

licenses/BUSL_LICENSE

@@ -0,0 +1,63 @@
+Business Source License 1.1
+
+License text copyright (c) 2017 MariaDB Corporation Ab, All Rights Reserved.
+"Business Source License" is a trademark of MariaDB Corporation Ab.
+
+-----------------------------------------------------------------------------
+
+Parameters
+
+Licensor:             Universal Navigation Inc.
+
+Licensed Work:        Uniswap V4 Core
+                      The Licensed Work is (c) 2023 Universal Navigation Inc.
+
+Additional Use Grant: Any uses listed and defined at
+                      v4-core-license-grants.uniswap.eth
+
+Change Date:          The earlier of 2027-06-15 or a date specified at
+                      v4-core-license-date.uniswap.eth
+
+Change License:       MIT License
+
+-----------------------------------------------------------------------------
+
+Terms
+
+The Licensor hereby grants you the right to copy, modify, create derivative works, redistribute, and make non-production use of the Licensed Work. The Licensor may make an Additional Use Grant, above, permitting limited production use.
+
+Effective on the Change Date, or the fourth anniversary of the first publicly available distribution of a specific version of the Licensed Work under this License, whichever comes first, the Licensor hereby grants you rights under the terms of the Change License, and the rights granted in the paragraph above terminate.
+
+If your use of the Licensed Work does not comply with the requirements currently in effect as described in this License, you must purchase a commercial license from the Licensor, its affiliated entities, or authorized resellers, or you must refrain from using the Licensed Work.
+
+All copies of the original and modified Licensed Work, and derivative works of the Licensed Work, are subject to this License. This License applies separately for each version of the Licensed Work and the Change Date may vary for each version of the Licensed Work released by Licensor.
+
+You must conspicuously display this License on each original or modified copy of the Licensed Work. If you receive the Licensed Work in original or modified form from a third party, the terms and conditions set forth in this License apply to your use of that work.
+
+Any use of the Licensed Work in violation of this License will automatically terminate your rights under this License for the current and all other versions of the Licensed Work.
+
+This License does not grant you any right in any trademark or logo of Licensor or its affiliates (provided that you may use a trademark or logo of Licensor as expressly required by this License).
+
+TO THE EXTENT PERMITTED BY APPLICABLE LAW, THE LICENSED WORK IS PROVIDED ON AN "AS IS" BASIS. LICENSOR HEREBY DISCLAIMS ALL WARRANTIES AND CONDITIONS, EXPRESS OR IMPLIED, INCLUDING (WITHOUT LIMITATION) WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, AND TITLE.
+
+MariaDB hereby grants you permission to use this License’s text to license your works, and to refer to it using the trademark "Business Source License", as long as you comply with the Covenants of Licensor below.
+
+-----------------------------------------------------------------------------
+
+Covenants of Licensor
+
+In consideration of the right to use this License’s text and the "Business Source License" name and trademark, Licensor covenants to MariaDB, and to all other recipients of the licensed work to be provided by Licensor:
+
+1. To specify as the Change License the GPL Version 2.0 or any later version,    or a license that is compatible with GPL Version 2.0 or a later version,    where "compatible" means that software provided under the Change License can    be included in a program with software provided under GPL Version 2.0 or a    later version. Licensor may specify additional Change Licenses without    limitation.
+
+2. To either: (a) specify an additional grant of rights to use that does not    impose any additional restriction on the right granted in this License, as    the Additional Use Grant; or (b) insert the text "None".
+
+3. To specify a Change Date.
+
+4. Not to modify this License in any other way.
+
+-----------------------------------------------------------------------------
+
+Notice
+
+The Business Source License (this document, or the "License") is not an Open Source license. However, the Licensed Work will eventually be made available under an Open Source License, as stated in this License.

licenses/MIT_LICENSE

@@ -0,0 +1,7 @@
+Copyright 2023 Universal Navigation Inc. 
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

src/ProtocolFees.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 import {Currency} from "./types/Currency.sol";

src/interfaces/external/IERC20Minimal.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 /// @title Minimal ERC20 interface for Uniswap

src/libraries/BitMath.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 /// @title BitMath

src/libraries/FixedPoint128.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 /// @title FixedPoint128

src/libraries/FixedPoint96.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 /// @title FixedPoint96

src/libraries/LPFeeLibrary.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 import {CustomRevert} from "./CustomRevert.sol";

src/libraries/LiquidityMath.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 /// @title Math library for liquidity

src/libraries/ParseBytes.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 
 pragma solidity ^0.8.0;
 

src/libraries/ProtocolFeeLibrary.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 /// @notice library of functions related to protocol fees

src/libraries/SafeCast.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 import {CustomRevert} from "./CustomRevert.sol";

src/libraries/SqrtPriceMath.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 import {SafeCast} from "./SafeCast.sol";

src/libraries/SwapMath.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 import {FullMath} from "./FullMath.sol";

src/libraries/TickMath.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 import {BitMath} from "./BitMath.sol";

src/libraries/UnsafeMath.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
 /// @title Math functions that do not check inputs or outputs