Third-party notices

Licence and attribution notices for third-party software included with SimpleDiagrams.

# Third-party notices

SimpleDiagrams includes the `@excalidraw/excalidraw` package.

## Excalidraw

MIT License

Copyright (c) 2020 Excalidraw

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.

The production release process must generate and review a complete dependency
and font-license inventory before distribution.

## API documentation assets

SimpleDiagrams uses `drf-spectacular` and `drf-spectacular-sidecar`, each under
the BSD 3-Clause License. The sidecar distribution includes Swagger UI under
the Apache License 2.0 and ReDoc under the MIT License. Their package license
files and original copyright notices are retained in the installed
distribution. The release dependency inventory must include these embedded
browser assets rather than treating the sidecar as only Python code.