PdfiumViewer 2.13.0: Copyright Pieter van Ginkel 2012-2015; Apache License 2.0.
PdfiumViewer.Native no_v8-no_xfa 2018.4.8.256: Copyright Pieter van Ginkel 2012-2017.
PDFium: Copyright 2014 The PDFium Authors; BSD-style license.
PDFsharp 1.50.5147: Copyright empira Software GmbH; MIT License.
See bundled license files. Native library source/build information:
https://github.com/pvginkel/PdfiumViewer
https://github.com/pvginkel/PdfiumBuild
https://pdfium.googlesource.com/pdfium/
