"Layout" parameter doesn't work anymore in recent dev version

Describe the bug Hi Talley @tlambert03 ,

this is related to our quick try of the recent master branch as discussed in #53 , the magicgui layout='vertical' parameter doesn’t work anymore. If this is intentional, no big deal. I can work in the meantime. I just switched back to the former released version.

To Reproduce

• Install napari, magicgui (recent master branch from github) and pyclesperanto_prototype, more_operations_Christmas2020 branch.

Expected behavior It should not bring an error in the following line

@magicgui(auto_call=True, layout='vertical')
def filter(input1: Image, operation: Filter = Filter.please_select, x: float = 1, y: float = 1, z: float = 0):

However, it crashes with this error:

C:\Users\rober\miniconda3\python.exe C:/structure/code/pyclesperanto_prototype/demo/napari_gui/particle_analyser.py
Traceback (most recent call last):
  File "C:/structure/code/pyclesperanto_prototype/demo/napari_gui/particle_analyser.py", line 65, in <module>
    def filter(input1: Image, operation: Filter = Filter.please_select, x: float = 1, y: float = 1, z: float = 0):
  File "c:\structure\code\magicgui\magicgui\function_gui.py", line 280, in inner_func
    func_gui = FunctionGui(
  File "c:\structure\code\magicgui\magicgui\function_gui.py", line 75, in __init__
    sig = magic_signature(function, gui_options=param_options)
  File "c:\structure\code\magicgui\magicgui\signature.py", line 269, in magic_signature
    raise ValueError(
ValueError: keyword arguments (gui_options) MUST match parameters in the decorated function.
Got extra keys: {'layout'}

Environment (please complete the following information):

• OS: Windows
• magicgui version 0.1.7-dev7
• napari 0.4.3-dev2
• PtQt5 5.15.1

[tlambert03]

TypeError: “widget” must be a QWidget or a sequence of QWidgets

actually… that error suggests that you don’t have https://github.com/napari/napari/pull/1994

sorry about all this 😂 I wouldn’t blame you if you wanted to wait a tiny bit for these new versions to actually be released

[tlambert03]

just a heads up @haesleinhuepf, for container widgets (And for the magicgui decorator itself), this has returned to “layout=” rather than “orientation=” for release 0.2.1