Changes license to apache 2.0

Because we're an apache project now.

Author: Stefan Krawczyk

LICENSE

@@ -1,22 +1,15 @@
 Copyright (c) 2019-2022 Stitch Fix
 Copyright (c) 2023-2025 DAGWorks Inc.
-All rights reserved.
+Copyright (c) 2025-present Apache Software Foundation
 
-Redistribution and use in source and binary forms, with or without modification, are permitted
-(subject to the limitations in the disclaimer below) provided that the following conditions are met:
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
 
-* Redistributions of source code must retain the above copyright notice, this list of conditions and the following
-disclaimer.
-* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
-disclaimer in the documentation and/or other materials provided with the distribution.
-* Neither the name of Stitch Fix, DAGWorks, nor the names of its contributors may be used to endorse or promote products derived
-from this software without specific prior written permission.
+   http://www.apache.org/licenses/LICENSE-2.0
 
-NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY
-THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
-OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

docs/get-started/license.rst

@@ -2,7 +2,7 @@
 License
 =======
 
-Hamilton is released under the `BSD 3-Clause Clear License <https://github.com/dagworks-inc/hamilton/blob/main/LICENSE>`_.
+Hamilton is released under the `Apache 2.0 License <https://github.com/apache/hamilton/blob/main/LICENSE>`_.