Reference to RDFJS libraries

Dear Lazy RDFJSWeb,

If you use one of the rdfjs libraries in your front-end (browser) 
application, do you refer to the source or have a local copy?

I'm inclined to point to a GitHub resource for example, if others 
wouldn't mind relying on that in their applications as well i.e., to 
collectively take advantage of user browser caching. Otherwise, it is 
more of a bother, and a local copy instead is as reliable as it gets.

Is there a consensus? Got thoughts?

-Sarven
http://csarven.ca/#i