[WIP] proposed new unicode module
The Node.js enhancement proposal https://github.com/nodejs/node-eps/pull/15 proposes the addition of a new 'unicode'
module that introduces a number of ICU backed APIs, including the ability to transcode a Buffer from one encoding to another. This is the prototype implementation of the new module.
It is a work in progress. This is not intended to be landed at this time.
/cc @trevnorris @addaleax @srl295