Show request parts in a unified view

Feature Request
Currently Yaak has tabs for various parts of the request: Body, Params, Headers, Auth.
Often I will have requests with small bodies, few params and headers which take very little vertical space individually, but I have to constantly switch tabs to edit other parts of the request.
It would be great if Yaak had an option to show these bits in a vertical stack, with resizeable panes for each part.
I have made a scrappy mockup to illustrate the idea:
