`FigureFrameWx` attributes and methods

sizer is deprecated (use frame.GetSizer() instead).
figmgr and get_figure_manager are deprecated (use frame.canvas.manager instead).
num is deprecated (use frame.canvas.manager.num instead).
toolbar is deprecated (use frame.GetToolBar() instead).
toolmanager is deprecated (use frame.canvas.manager.toolmanager instead).

`RendererWx.offset_text_height`

... is deprecated.