fix tkinter config methods

[Akuli]

This code doesn't type check correctly with what's currently on master. This PR fixes it.

import tkinter.ttk

tkinter.Tk().config
tkinter.Toplevel().config
tkinter.Button().config
tkinter.Canvas(offset=1).config
tkinter.Checkbutton().config
tkinter.Entry().config
tkinter.Frame().config
tkinter.Label().config
tkinter.Listbox().config
tkinter.Menu().config
tkinter.Menubutton().config
tkinter.Message().config
tkinter.Radiobutton().config
tkinter.Scale().config
tkinter.Scrollbar().config
tkinter.Text().config
tkinter.OptionMenu(None, tkinter.StringVar(), 'foo').config
tkinter.Spinbox().config
tkinter.LabelFrame().config
tkinter.PanedWindow().config
tkinter.ttk.Button().config
tkinter.ttk.Checkbutton().config
tkinter.ttk.Entry().config
tkinter.ttk.Combobox().config
tkinter.ttk.Frame().config
tkinter.ttk.Label().config
tkinter.ttk.Labelframe().config
tkinter.ttk.Menubutton().config
tkinter.ttk.Notebook().config
tkinter.ttk.Panedwindow().config
tkinter.ttk.Progressbar().config
tkinter.ttk.Radiobutton().config
tkinter.ttk.Scale().config
tkinter.ttk.Scrollbar().config
tkinter.ttk.Separator().config
tkinter.ttk.Sizegrip().config
tkinter.ttk.Treeview().config
tkinter.ttk.LabeledScale().config
tkinter.ttk.OptionMenu(None, tkinter.StringVar(), 'foo').config

I'm sorry for not noticing this earlier. The project I used for testing the stubs used __setitem__ instead of config and configure. I converted it to use config and configure when I found this problem.

[Akuli]

In case someone runs into this before it gets merged, you can still use configure instead of config, and some_toplevel['option'] = value instead of some_toplevel.config(option=value)

[Akuli]

Any update on this?

[srittau]

LGTM after a cursory inspection.