Krystian's Q4 2023 Update

https://cppalliance.org/krystian/2024/01/12/KrystianQ4Update.html

The update reports enhancements to MrDocs, including overload set rendering, support for friend declarations, deduction guides, enumerators, and a new SymbolName type. It also notes clang patches improving conformance and dependent name lookup diagnostics.