Add license

LICENSE

@@ -0,0 +1,30 @@
+BSD 3-Clause License
+
+- Copyright (c) 2015-, Jupyter Development Team
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. 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.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+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.

README.md

@@ -78,3 +78,33 @@ make html linkcheck
 Point your browser to the following URL to access the generated documentation:
 
 _file:///my/projects/jupyter_core/docs/\_build/html/index.html_
+
+## About the Jupyter Development Team
+
+The Jupyter Development Team is the set of all contributors to the Jupyter
+project. This includes all of the Jupyter subprojects. A full list with
+details is kept in the documentation directory, in the file
+`about/credits.txt`.
+
+The core team that coordinates development on GitHub can be found here:
+https://github.com/ipython/.
+
+## Our Copyright Policy
+
+Jupyter uses a shared copyright model. Each contributor maintains copyright
+over their contributions to Jupyter. It is important to note that these
+contributions are typically only changes to the repositories. Thus, the Jupyter
+source code in its entirety is not the copyright of any single person or
+institution. Instead, it is the collective copyright of the entire Jupyter
+Development Team. If individual contributors want to maintain a record of what
+changes/contributions they have specific copyright on, they should indicate
+their copyright in the commit message of the change, when they commit the
+change to one of the Jupyter repositories.
+
+With this in mind, the following banner should be used in any source code file
+to indicate the copyright and license terms:
+
+```
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+```

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "hatchling.build"
 [project]
 name = "jupyter_core"
 description = "Jupyter core package. A base package on which Jupyter projects rely."
-license = { file = "COPYING.md" }
+license = { file = "LICENSE" }
 classifiers = [
   "Framework :: Jupyter",
   "Intended Audience :: Developers",