Uses (parts of) the following packages:

StackBlur.js
    MIT License - Copyright (c) 2010 Mario Klingemann
    https://github.com/flozz/StackBlur/

Dithering techniques based on PhotoDemon
    Simplified BSD license - Copyright 2002-2023 by Tanner Helland
    https://github.com/tannerhelland/PhotoDemon/blob/main/Forms/Adjustments_BlackAndWhite.frm
    https://tannerhelland.com/2012/12/28/dithering-eleven-algorithms-source-code.html

    Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

    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.
    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.

Sharpen Algorithm
    mikecao and jaredatdannyronsrescue
    https://gist.github.com/mikecao/65d9fc92dc7197cb8a7c?permalink_comment_id=4314200#gistcomment-4314200

Image Scale Algorithm
    MIT License - Copyright (c) 2017 Eugene Tiurin
    https://github.com/ytiurin/downscale/blob/master/src/downsample.js

FileSaver.js - used as fallback for older browsers
    MIT License - Copyright © 2016 Eli Grey
    https://github.com/eligrey/FileSaver.js

LZWDecoder - used for GIF decoding
    MIT License - Copyright (c) 2015 Matt Way
    https://github.com/matt-way/gifuct-js/blob/master/src/lzw.js

Additional Retro Platform palettes by Zeb Elwood
