[Bf-python] New Scene method

[Jacques Guignot]

Willian Padovani Germano wrote:

>Anyway, Scene.setSize() isn't descriptive at all.  Could you rename it
>to something else like:
>
>Scene.setWinSize or .setWinRes, .RenderWinRes or .RenderWinXYDims or
>whatever that makes clear we're talking about the rendered image?
>


no problemo, I do it right now!