From now on, IE8 is only supported if polyfills for `Object.keys`,
`Array.prototype.forEach`, and `Array.prototype.indexOf` are
provided. The suggested polyfills from MDN are provided in
ie8-polyfill.js, or you can use https://github.com/es-shims/es5-shim
for a more complete set of polyfills.
Make options handling logic match node's `http` module more
closely and let the browser handle all of the relative url
cases itself.
This has a few important advantages:
* Behavior is closer to native `http` modula
* Relative paths in urls are handled properly (fixes#16)
* Code is simpler and more obviously correct
The default behavior now preserves the 'content-type' header, at
the expense of not providing pseudo-streming in Safari, generic
WebKit, and older Chrome. Applications that require streaming
and already use 'prefer-stream' mode will not be affected.
The 'prefer-fast' mode is now deprecated, as that behavior now
matches the default. The 'allow-wrong-content-type' mode is new;
it gives the same behavior as the old default in case binary
streaming is essential.
Fixes#8
In order to have parity with XMLHttpRequest fetch credentials should use same-origin instead of omit
Setting XMLHttpRequest.withCredentials to false has no effect on same-site request
John Hiesey
Cesar Andreu
Ben Drucker