`WidgetOptions` being removed about magic-class

[tlambert03]

Some of the private things, such as ValueWidget, are necessary for isinstance check and/or class inheritance,

yep, I agree, ValueWidget should be public!
as you run into other things that feel like they should be public, take note of them and we'll make sure they're either available, or have reasonable alternatives

[tlambert03]

note also that from magicgui._type_wrapper import resolve_annotation no longer exists... So you should remove usage of it from your code too

[hanjinliu]

Hi @tlambert03 , thank you for notifying me!
I'll get around to it in a few days.

I would like to be reorganizing a number of things, most of which were private, and these will probably break some of your stuff

Some of the private things, such as ValueWidget, are necessary for isinstance check and/or class inheritance, which means we (including all the users) still have to import them from magicgui. I'll add some try/except to avoid incompatibility, but I think it might be better to make them publically available, or future refactoring (if any?) will cause another confusion.