Version 6.0 is compiled to target the .NET framework version 4.0 and later.
Version 6.0 also contains a version of Xceed Ftp for .NET that is compiled to target the .NET framework version 4.5 and later.
Version 4.9 is identical to version 6.0 but is compiled to target the .NET framework 2.0 and later.
New features, changes and fixes
Xceed Zip for .NET
New: Added the ability for the Deflate compression method to use multiple threads to increase compression speed.
New: Added ZipArchive.DefaultPasswordTextEncoding property that accepts a System.Text.Encoding object. It allows establishing compatibility with other zip tools when using AES encryption passwords that contain non-ASCII characters.
Xceed SFtp for .NET
Changed: Removed usage of Thread.Abort() internally because it caused undefined behavior and unhandled exceptions when disconnecting.
