Added version string

app.py

@@ -1,4 +1,6 @@
 import gradio as gr
+import paperqa
+
 
 docs = None
 
@@ -30,7 +32,6 @@ def do_ask(question, button, openapi, dataset, slider, progress=gr.Progress()):
         if docs is None:  # don't want to rebuild index if it's already built
             import os
             os.environ['OPENAI_API_KEY'] = openapi.strip()
-            import paperqa
             docs = paperqa.Docs()
             # dataset is pandas dataframe
             for _, row in dataset.iterrows():
@@ -54,8 +55,8 @@ def do_ask(question, button, openapi, dataset, slider, progress=gr.Progress()):
 
 
 with gr.Blocks() as demo:
-    gr.Markdown("""
-    # Document Question and Answer
+    gr.Markdown(f"""
+    # Document Question and Answer (v{paperqa.__version__})
 
     This tool will enable asking questions of your uploaded text or PDF documents.
     It uses OpenAI's GPT models and thus you must enter your API key below. This