Update C++ Standards to allow C++23 - #609

Open

ChrisJChang wants to merge 5 commits into

GambitBSM:masterfrom

ChrisJChang:claude/gambit-cpp20-23-compat-j6dth1

Commits on Jul 3, 2026

Add C++20/C++23 support, drop active C++11/C++14 support
claude
committed
881801e
Drop stale C++11/C++14 references from comments and messages
claude
committed
53e3a38

Commits on Jul 6, 2026

Fix C++23 build error in HDF5 combine tools
claude
committed
20f229f
Fix C++23 build error: Farray copy constructor takes non-const ref
claude
committed
848ca3e

Commits on Jul 7, 2026

Fix clang C++20/23 build error in vendored fjcore ClosestPair2D
claude
committed
6e4d90d