Another minor release, containing security fixes and smaller bugfixes.
Additionally, this version will have an additional target framework, .NET Standard 2.1, which will see some speed improvements when used in newer versions of .NET (Core), mainly in Bzip2.

Features

• [#611] Bzip input stream simple vectorization by Konrad Kruczyński
• [#351] Add support for Filename field in GZip by nils måsén

Smaller fixes and optimizations

• [#579] Implement very simple ReadAsync in ZipAESStream by Richard Webb
• [#587] Remove supported method checks from ZipEntry.CompressionMethod setter by Richard Webb
• [#593] Simplify DropPathRoot and fix out of bounds issue by nils måsén
• [#575] Replace uses of new T[0] with Array.Empty<T> by

Other changes (not related to library code)

• [#586] Convert VB sample projects to PackageReference format by Richard Webb
• [#533] Convert the C# sample projects to PackageReference format by Richard Webb
• [#457] add basic async unit tests for the inflator/deflator streams by Richard Webb
• [#588] Add a simple async read test for ZipFile by