ldoc has a magical `@classmod` module type which tries to detect what is a method and what is a static function. It fails about as often as it works. This commit makes everything explicit to remove such issues. Fixes #2640 Ref #1373
It was documented but not implemented. It is necessary when the "Z index" needs to be manually specified.
A layout with manual widget positions. It is still useful as it is manager by the hierarchy and widget position can be functions.