Update unit test and requirements for repl

Author: dhoomakethu

setup.py

@@ -92,7 +92,8 @@
         ],
         'repl': [
             'click>=6.7',
-            'prompt-toolkit==2.0.4'
+            'prompt-toolkit==2.0.4',
+            'pygments==2.2.0'
         ]
     },
     entry_points={

test/test_framers.py

@@ -132,10 +132,13 @@ def test_send_packet(rtu_framer):
     client.state = ModbusTransactionState.TRANSACTION_COMPLETE
     client.silent_interval = 1
     client.last_frame_end = 1
+    client.timeout = 0.25
     client.idle_time.return_value = 1
     client.send.return_value = len(message)
     rtu_framer.client = client
     assert rtu_framer.sendPacket(message) == len(message)
+    client.state = ModbusTransactionState.PROCESSING_REPLY
+    assert rtu_framer.sendPacket(message) == len(message)
 
 
 def test_recv_packet(rtu_framer):