New Libraries: Variant2. Updated Libraries: Align, Any, Asio, Beast, CircularBuffer, Container, Context, Conversion, Core, DynamicBitset, Endian, Fiber, Filesystem, Flyweight, Histogram, Iostreams, Interprocess, Intrusive, LexicalCast, Log, Math, Metaparse, Move, MultiArray, MultiIndex, Outcome, Parameter, PtrContainer, PolyCollection, SmartPtr, Stacktrace, Test, Utility, Uuid, Variant, Yap.