Revert "Do not stop the server when cleaning up"

This reverts commit 0f2cd3f.

Author: robertbasic

pugdebug/debugger.py

@@ -142,6 +142,8 @@ def cleanup(self):
             self.current_connection.disconnect()
             self.connections.clear()
 
+        self.server.stop()
+
         self.current_connection = None
         self.step_result = ''
         self.current_file = ''
@@ -244,6 +246,7 @@ def handle_stopped(self):
             self.start_new_connection()
         else:
             self.cleanup()
+
             self.debugging_stopped_signal.emit()
 
     def run_debug(self):