* Add the withCredentials configuration key
It enables passing credentials in CORS requests. e.g. Cookies and
Authorization headers.
* Improve withCredentials documentation
* Add unit tests for the withCredentials config
* Update configuration.md
* Update configuration.md
* only set `withCredentials` Fetch flag if the config value is truthy
there are some workarounds in the wild today that involve setting `withCredentials` on `system.fn.fetch` directly.
this approach avoids mangling those existing workarounds!
* add more test cases
* Update configs-wrap-actions.js
* Update index.js
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