More work on the diff kitten

kittens/tui/handler.py

@@ -30,6 +30,9 @@ class Handler:
     def on_eot(self):
         pass
 
+    def on_wakeup(self):
+        pass
+
     def write(self, data):
         if isinstance(data, str):
             data = data.encode('utf-8')

kittens/tui/loop.py

@@ -283,6 +283,8 @@ class Loop:
             handler.on_term()
         if b'i' in data:
             handler.on_interrupt()
+        if b'1' in data:
+            handler.on_wakeup()
 
     def _wakeup_write(self, val):
         while not os.write(self.wakeup_write_fd, val):