Linenoise (https://github.com/antirez/linenoise) is a delightfully simple
command line library. This Lua module is simply a binding for it.
The main Linenoise upstream has stagnated a bit, so this binding tracks
https://github.com/yhirose/linenoise/tree/utf8-support, which includes things
like UTF-8 support and ANSI terminal escape sequence detection.
