Update app.py

app.py

@@ -106,6 +106,7 @@ def respond(history=None):
         top_p,
         presence_penalty,
         count_penalty,
+        history
     ):
         history[-1][1] += character
         yield history
@@ -119,6 +120,7 @@ def generator(
     top_p=0.5,
     presencePenalty=0.5,
     countPenalty=0.5,
+    history=None
 ):
     args = PIPELINE_ARGS(
         temperature=max(0.2, float(temperature)),