Merge pull request #389 from 708yamaguchi/fix-is-interpolating

Fix is_interpolating()

skrobot/interfaces/ros/base.py

@@ -661,4 +661,4 @@ def action_feedback_cb(self, msg):
         self.last_feedback_msg_stamp = msg.header.stamp
 
     def is_interpolating(self):
-        return self.time_sequence is None
+        return not self.simple_state == actionlib.SimpleGoalState.DONE