Make buckets remember window size and location when re-opening in Windows.

[gitchap]

After closing and re-opening Buckets in Windows (10), it always defaults to a smallish window size in the middle of the screen. It would be nice if it remembered the size and location that I last set it to.

[iffy]

I think this is a duplicate of #406

[gitchap]

I had a hard time figuring out what #406 was getting at, but I followed the link to #624 and saw that quitting from the file menu (or pressing CTRL-Q) does make the app remember the window size, location, AND which budget was open!

I agree that clicking the "X" to close the window is the way most "programs" in Windows behave, and it's the way I (and most Windows users?) "quit" applications.

[iffy]

Included in v0.72.1 release (AUTOMATED COMMENT)