Expose xhr.withCredentials with correct default

[kumavis]

Fixes#71
Replaces #84

[novabyte]

+1 can we merge this in please.

[kumavis]

re-reviewed my code change, and all seems good. this is the correct default behavior for XHRs in the browser. ready to merge.

[novabyte]

@kumavis Thanks for re-checking it. I just stumbled across this problem in jsdom with a AJAX library I'm using in some headless test cases. The AJAX library detects support for CORS requests with:

var cors = 'withCredentials' in tmpxhr;

This fails at the moment in jsdom (3.*) because the withCredentials property is not on the XMLHttpRequest object...

[novabyte]

@driverdan Please can you merge this into master and build a new release.

[kumavis]

📲 come on dan drive it home 🚙

[mareksuscak]

Can we merge this thing @driverdan?

[mareksuscak]

@novabyte for working XHR in jsdom you can use my patch https://github.com/mareksuscak/jsdom-xhr-patch until this gets resolved and merged.

[kumavis]

HE LIVES 👻