specified width on message panel displaying scheduled commands

arduino_timetable/gui.py

@@ -129,7 +129,11 @@ class ParsedCommandsPanel(tk.Frame):
         self._parent = parent
         self.label = tk.Label(self)
         self.label.pack(fill=tk.X, pady=5, padx=5)
-        self.messages = tk.Message(self, text='', font=("Courier", 8))
+        self.messages = tk.Message(self,
+            text='',
+            font=("Courier", 8),
+            width=250
+            )
         self.messages.pack(fill=tk.X, pady=5, padx=5)
         self.pack(side=tk.TOP, fill=tk.X)