move to iife rather than es, add support for Wx and streamlit

lightweight_charts/polygon.py

@@ -396,7 +396,7 @@ class PolygonChart(Chart):
     Tickers, security types and timeframes are to be defined within the chart window.
 
     If using the standard `show` method, the `block` parameter must be set to True.
-    When using `show_async`, either is acceptable.
+    `show_async` can also be used.
     """
     def __init__(
             self, api_key: str, live: bool = False, num_bars: int = 200, end_date: str = 'now', limit: int = 5_000,