Per-tab sheets

[kieransenior]

I noticed there's a load of commented out code on master, i.e.

// Returns the (lazily created) window sheet controller of this window. Used
// for the per-tab sheets.
//- (GTMWindowSheetController*)sheetController;

Is there any status on this or is there some other approach to per-tab sheets where the sheet's attached point is below the tabs toolbar?

EDIT: Happy to create a PR of something I could whip up if not! :)

Cheers