Support for getHeaders removed

[mllrjb]

Broken by the fix for #1001

[mikeal]

This method should be added to caseless. Once it is we'll update the dep version and push a new release to fix.

[calibr]

Is this still an issue? I would like to submit a pull request to caseless if it is

[mastermatt]

I don't see where getHeaders existed before the commit.
setHeaders was removed and instead setHeader, which proxies to caseless.set, can take an object as a single first param with key-value pairs.

Other than that getting all the headers can be done by simply accessing the object at request.headers.

I think this issue should be closed to avoid confusion.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.