Fix User.send* methods not working (fixes #21)

Author: Pietro Albini

botogram/objects/mixins.py

@@ -30,7 +30,11 @@ def _get_call_args(self, reply_to, extra):
             reply_to = reply_to.message_id
 
         # Get the correct chat_id
-        chat_id = self.username if self.type == "channel" else self.id
+        # There is an hasattr because User objects doesn't have any type
+        if hasattr(self, "type"):
+            chat_id = self.username if self.type == "channel" else self.id
+        else:
+            chat_id = self.id
 
         args = {"chat_id": chat_id}
         if reply_to is not None: