geosimplify-js polyline simplification library

Based on https://github.com/mourner/simplify-js, geosimplify-js fixes the problem that the simple pythagorean measure used in simplify-js changes size if you simply give it longitude/latitude sequences to simplify.

Used in the QML plugin of Qt Location.

The sources can be found in reproducible-path/qtlocation-opensource-src-5.15.8+dfsg/src/3rdparty/geosimplify.js.

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 Copyright (c) 2017 Daniel Patterson

geosimplify-js License.

 Qt port of geosimplify.js, https://github.com/mapbox/geosimplify-js

 Copyright (c) 2017, Daniel Patterson
 All rights reserved.

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 permitted provided that the following conditions are met:

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       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
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 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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 Based on simplify-js by Vladimir Agafonkin - http://mourner.github.io/simplify-js/