So what does this have over ZeptoJS [0] or jQLite [1]? Things like:

  // jQuery $() function
  function $(element) {
      return document.querySelectorAll(element); // Redirects the function to querySelectorAll()
  }

Might fly in evergreen browsers [3] but not all (<IE 8, yes this is old but there is no mention of it in the README and some people still need to support this).

[0] http://zeptojs.com/

[1] https://code.google.com/p/jqlite/

[2] http://tomdale.net/2013/05/evergreen-browsers/