Resize matters !

A spam like title because recently I worked was on resize stuffs :

• On GEF Bot there was a painful bug . If the edit part was resizable, a drag behaves like a resize. Now drag behaves correctly and a new resize method is available to resize an edit part :
  
  
  
  
• Do you find useful the ability to drag the selector figure in the outline of GMF Editors ? you will probably like the ability the resize this figure (fullscreen video) :
  
  I will try to contribute this feature for 3.7