This directory includes includes/class-servantly-ask-qr-encoder.php, which is
a ported and lightly bug-fixed derivative of two upstream MIT-licensed works:

  * Kriv-Art/Qr-Code (https://github.com/Kriv-Art/Qr-Code)
    Copyright (c) 2019 Noah Too

  * Project Nayuki's QR Code generator library
    (https://www.nayuki.io/page/qr-code-generator-library)
    Copyright (c) Project Nayuki

Both are released under the MIT License, reproduced below. See the header
comment in class-servantly-ask-qr-encoder.php for a description of what was
changed during the port (renamed to plugin-prefixed global classes since
this plugin has no PSR-4 autoloader; trimmed to the module-matrix encoder
only; three latent upstream bugs fixed).

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MIT License

Copyright (c) 2019 Noah Too

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.
