Mario source and asset attribution

The sprite data and decoder retain the umaim/Mario source, Source/settings/sprites.js,
blob 9566387f26f584b197859aa8e2f0b7e481d1cb79.
The retained source names its upstream as umaim/Mario; the original blob identity
above is preserved. No new upstream authenticity or relicensing claim is made.
Nintendo retains Mario character, artwork and game-sound rights. Contra-related
data retained by the shared runtime remains subject to its original owners.
Software licensing does not grant rights to these images, recordings or trademarks.
The following MIT text applies to the existing source software it originally covers,
not to all added code or third-party game assets. See LICENSE-CODE.md.

MIT License

Copyright (c) 2018 Cloud

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.
