Global "header"s wiped on "extend"

[wilkohein]

Global headers provided on client init do not work.
Reason: Every function call uses something like
{code}
var options = extend({ body: body, headers: {} }, opts)
{code}
i.e. forcefully defines a "headers" attribute. On the used "xtend" version of extend this is therefore overriding any global options set:
{code}
var options = extend({}, client._options, opts)
{code}

Resolution: Use version of "extend" supporting recursive extension.

[sichvoge]

@wilkohein, can you contact me on christian dot vogel at mulesoft dot com? I saw your new implementation or fork and I wasn't able to raise any issues. Like to speak to you about that :)