Format on Save

[EnnioEnnio]

Problem to solve

As a Squeak Developer, I want PoppyPrint to automatically format my newly generated Smaltalk-Code every Time I hit CMD+S (STRG+S). This should be a opt-in/out in the Preferences Window as explained in

Further details

relates to
#22 and
#46

Acceptance Criteria

• When I edit a method then I press save and the code is nicely formatted
• Given an unchanged method when I want to format it then I press save so its formatted