Removed unneeded Date related functions.
ajax() now takes arguments as an object instead of argument list
Hand off to ajax.php if is_ajax() returns true
More compley JSON response, including notify, after, before, and html
include instead of include_once in load()
Detect AJAX requests by custom request header instead of content-type or is_ajax()
New functions transfered from old version

Now have .before and .after

ajax() now sets Request-Type header, making it distinctly and ajax request via $_SERVER['HTTP_REQUEST_TYPE']
New ajax response json functionality

Add json.html, json.before, and json.after fuctions, each
having target and content attributes, settign the result of
document.querySelector(json.target).[html|before|after](json.content)