Add InterleaveEven/InterleaveOdd, BitShuffle, GatherIndexNOr

Add IsNegative, IfNegativeThenElseZero, IfNegativeThenZeroElse

Add NEON_BF16, HWY_VERSION_GE/LT, HWY_EXPORT_T/HWY_DYNAMIC_DISPATCH_T

Add PromoteInRangeTo/ConvertInRangeTo/DemoteInRangeTo

Add Rol/Ror, RotateLeft/RotateLeftSame/RotateRightSame

Add SatWidenMulPairwiseAccumulate, SatWidenMulAccumFixedPoint

Add stats.h, bit_set.h, IsEitherNaN

Add UI8/UI32/UI64 MulHigh, I64 MulEven/MulOdd/Mul128

Add WidenMulAccumulate, MulEvenAdd, MulOddAdd

contrib/bit_pack: support 32/64-bit lanes

contrib/math: Add Exp2, Hypot

contrib/matvec: Add MatVecAdd

contrib/sort: Add VQ/HeapSelect, partial sort

contrib/topology: add affinity, detect topology/cache size/CPU name

Enable runtime dispatch for NEON/RVV, bazel modules, abort handler

Remove DASSERT for negative Gather indices

Support opting out of GUnit dependency

Use SPR/ZEN4 bf16 dot product

Known GCC 13 RVV issue: parts of sort_test and bit_pack_test disabled

Known Clang RVV/QEMU issue: incorrect rounding mode in upper/lower halves