StringZilla v4.5 drops a major speed bomb on Unicode text processing. Think 10× faster tokenization and case folding. Up to 150× faster for case-insensitive substring search. It leaves ICU and PCRE2 wheezing in the dust.
Under the hood: SIMD all the way, AVX-512 on newer chips, plus script-aware SIMD kernels. Unicode correctness stays intact, thanks to smart fallback paths.
