**This crate is deprecated. Use crate `memchr` instead.**
Fast substring search for strings and byte strings, using the [two-way algorithm][tw].
This is the same code as is included in Rust's libstd that powers
`str::find(&str)`, but here it is exposed with some improvements:
- Available for byte string searches using ``&[u8]``
- Having an optional SSE4.2 accelerated version (if detected at runtime) which is even faster.
Runtime detection requires the default std feature.
- Using `memchr` for the single byte case, which is ultra fast.
[tw]: http://www-igm.univ-mlv.fr/~lecroq/string/node26.html