Mail: Improved the ability to trim input values in ContentType, ContentLocation and ReturnPath constructors.
Networking: Added support for SOCKS5 servers that respond with domain name.
SSH: Optimized usage of ChaCha20/Poly1305 in SSH.
Cryptography: Added ChaCha20Poly1305 class that implements ChaCha20/Poly1305 with an API that resembles Microsoft .NET's AesGcm class.
Cryptography: Added support for loading ECDSA certificates from PFX/P12 files in Microsoft .NET 5.0 and .NET Standard 2.1 on Linux and Apple macOS.
Cryptography: Added support for saving to PFX/P12 files for certificates with temporarily associated private keys in .NET 5.0 and .NET Standard 2.1 on Linux and macOS.
Cryptography: Improved ChaCha20/Poly1305 performance on .NET 3.5-4.6 and .NET Standard 2.x.
Cryptography: Improved performance of AES/CTR ciphers (used in SSH).
Common: Improved error handling when raising events via synchronization context.