Test data, tools and native dependencies for DjvuNet v0.8.0

Add reference backgraound images generated with DjvuView for DjvuNet image quality tests

Test data, tools and native dependencies for DjvuNet v0.8.0

Add reference images generated with libdjvulibre for DjvuNet image quality tests

Test data, tools and native dependencies for DjvuNet v0.8.0

v0.8.0.1

Add data for encoding tests, update compression data

Update data and tools for netcoreapp3.0 and netstandard2.1 support

Moving project to netcoreapp3.0 and netstandard2.1 targets requires new tools and some new test data.

Test data for DjvuNet project v0.7.0.12

Updated tools package due to expanded support for netcoreapp2.1 and net472

Test data for DjvuNet project v0.7.0.11

Add content text to tests what allows to remove dependency of DjvuNet.Tests and DjvuNet.Wavelet.Tests on DjvuNet.DjvuLibre

Test data for DjvuNet project v0.7.0.10

Additional data for IW44 encoder tests

Test data for DjvuNet project v0.7.0.9

Preliminary test data for IW44 encoder implementation

Test data for DjvuNet project v0.7.0.8

Expanded json schema used for serialization of DjVu files data based on improved serialization implementation in DjvuLibre (DjvuDumpHelper class and djvudump utility).

Added test data for TH44 chunks - thumbnails.

Test data for DjvuNet project v0.7.0.7

New data for DjvuNet.Wavelet.Tests tests.