- made the app not remember the window size if the app is maximized and remember in QSettings if it was maximized. This way we can restore the maximized state but restore the windows size unmaximized

- added a button to clear de GUI preferences in Preferences -> General -> Gui Settings -> Clear GUI Settings
- added key shortcuts for the shape transformations within Geometry Editor: X, Y keys for Flip(mirror), SHIFT+X, SHIFT+Y combo keys for Skew and ALT+X, ALT+Y combo keys for Offset
- adjusted the plotcanvas.zomm_fit() function so the objects are better fit into view (with a border around)

PlotCanvas.py

@@ -198,6 +198,13 @@ class PlotCanvas(QtCore.QObject):
             except TypeError:
                 pass
 
+        # adjust the view camera to be slightly bigger than the bounds so the shape colleaction can be seen clearly
+        # otherwise the shape collection boundary will have no border
+        rect.left *= 0.96
+        rect.bottom *= 0.96
+        rect.right *= 1.01
+        rect.top *= 1.01
+
         self.vispy_canvas.view.camera.rect = rect
 
         self.shape_collection.unlock_updates()