rdflib.js 0.5.0 - renames Symbol to NamedNode

Hi all,

A quick heads-up to any users of https://github.com/linkeddata/rdflib.js/
out there.

We've been doing some refactoring and spring cleaning of it lately.
Version 0.5.0 introduces a couple of changes:

- Renames $rdf.Symbol to $rdf.NamedNode. (The motivation for the renaming
came about because Symbol is a reserved type in ES6). So, if you've been
using rdf.Symbol directly, be sure to rename
it in your code to NamedNode (when upgrading to 0.5.0 and above).

- Also got rid of the jQuery usage internally (it uses its own
XmlHttpRequest logic, however, so you
should not see any difference).

Dmitri Zagidulin