old_contents: __appname__ = "Scalpel"
  __version__ = '0.4.1'
  __url__ = 'http://scalpelsound.online.fr'
  
new_contents: __appname__ = "Scalpel"
  __version__ = '0.5.0'
  __url__ = 'http://scalpelsound.online.fr'
  
subject: Increment version number.