On behalf of maintainers I'm happy to announce that bytestring-0.11.2.0 (http://hackage.haskell.org/package/bytestring-0.11.2.0) is finally released. Highlights from the changelog (https://github.com/haskell/bytestring/blob/0.11.2.0/Changelog.md): * New functions: * ultra-fast SIMD-based `isValidUtf8` validator, * `foldr'`, `foldr1'`, `scanl1`, `scanr`, `scanr1`, `takeEnd`, `dropEnd`, `takeWhileEnd`, `dropWhileEnd`, `spanEnd`, `breakEnd` for lazy `ByteString`, * `writeFile` to dump `Builder` directly, * `fromFilePath` and `toFilePath` for locale-aware conversions. * Performance improvements: * speed up `floatDec` and `doubleDec` up to 10x using Ryu algorithm, * new SIMD-based `count` is up to 5x faster, * improve inlining of `foldl`, `foldl'`, `foldr`, `foldr'`, `mapAccumL`, `mapAccumR`, `scanl`, `scanr` and `filter`, * faster internal loop in `unfoldrN`, * use a static lookup table for Base16 `Builder`s. * Add `Lift` instances for `ByteString` and `ShortByteString`. * Put `HasCallStack` constraints onto partial functions. Many people contributed their time and effort to make this release happen. Just to name a few in no particular order, mostly according to `git log`: * Koz Ross * Lawrence Wu * Sylvain Henry * Andreas Abel * Ignat Insarov * Luke Clifton * Kyriakos Papachrysanthou * Oleg Grenrus * Simon Jakobi * Cameron SkamDart * Callan McGill * Georg Rudoy * Nanami Yokodake * Hécate Kleidukos * Viktor Dukhovni * me Best regards, Andrew