This release features support for 21 languages: AppleScript, C, C++, C, D, Go, Haskell, Java, JavaScript, Julia, Lua, OCaml, Objective-C, Perl, PHP, Python, R, Ruby, Rust, Scala and Swift. You can read about its accuracy on my blog - [Identifying the Language of Source Code](https://jdkato.github.io/2016/08/30/identifying-the-language-of-source-code.html).