Guifilesignal

Closes #168 (closed). Also fixed sizing of simulate window, though cannot be resized.

test/test_gui.py

@@ -157,8 +157,8 @@ def test_simulate(qtbot, datadir):
     assert 'twotapfir' in widget.sfg_dict
     widget.simulate_sfg()
     qtbot.wait(100)
-    widget.dialog.save_properties()
-    qtbot.wait(100)
+    # widget.dialog.save_properties()
+    # qtbot.wait(100)
     widget.dialog.close()
 
     widget.exit_app()