Problem

At least 2 of the arguments passed toFigure.__init__ do not have matchingget_{kwarg}/set_{kwarg} methods onFigure which makes usingfig.set(...) inconsistent with what can be done viaFigure(...).

xref#21549 which was motivated by this and includes an implementation of the solution (along with some additional refactoring).

Proposed solution

See#21549 for a majority of the implementation. cherry-picking commits from that branch and dropping the layout management refactoring is a very good start.

• use alias mechanism forsize_inches ->figsize
• addget/set_subplotparams
• use alias mechanism fromlayout ->layout_engine
• tests!
• whats new entry

Labeling this as good first issue because it is limited scope and easy because there is an existing implementation. There will be a discussion of API consistency so I think familiarity with Matplotlib's explicit API would be very helpful.