Infrastructure:

• Drop unsupported frameworks (Update TFMs and dependencies #696 )
• Drop appveyor in favor of github actions (Drop AppVeyor in favor of GitHub Actions #700 )
• Add .NET 10 to test matrix (Add .NET 10 to test matrix #724 )
• Support Sourcelink and Deterministic Build (Configure SourceLink, .snupkg symbols package format & update test projects #722 )
• Migrate to slnx (Convert all solution files to .slnx format #716 )

Codebase support work:

• Remove current [Obsolete] code from the codebase
• Drop serialization #ifdef from the code (Remove support for serialization? #562 )
• Make minimal amount of #if preprocessor conditions to simplify codebase & future support
• Configure editorconfig & format codebase

Dependencies:

• Remove System.Diagnostics.EventLog dependency from the core package (Castle.Services.Logging.EventLogIntegration for Windows EventLog #694 )

milestone:

• https://github.com/castleproject/Core/milestone/15

What else? please join to the discussion

cc @stakx @jonorossi