PyPi v1.4.0

• Adjusted the SS_GROUPBOX stylesheet: Groupbox title is now vertically
  aligned to be centered with the top line, regardless of the Qt lib. Nothing
  changes for PyQt5/PySide2, and fixes PyQt6/PySide6.
• Added function e8() to calculate the pixel width that is necessary to fit
  N number of '8's in the supplied font. In analogy to the 'em' font-metric,
  but now focused on displaying numeric values.