Polygon:

- Added async methods to polygon.
- The `requests` library is no longer required, with `urllib` being used instead.
- Added the `get_bar_data` function, which returns a dataframe of aggregate data from polygon.
- Opened up the `subscribe` and `unsubscribe` functions

Enhancements:
- Tables will now scroll when the rows exceed table height.

Bugs:
- Fixed a bug preventing async functions being used with horizontal line event.
- Fixed a bug causing the legend to show duplicate lines if the line was created after the legend.
- Fixed a bug causing the line hide icon to persist within the legend after deletion (#75)
- Fixed a bug causing the search box to be unfocused when the chart is loaded.

lightweight_charts/util.py

@@ -1,6 +1,18 @@
 import asyncio
+from datetime import datetime
 from random import choices
-from typing import Literal
+from typing import Literal, Union
+import pandas as pd
+
+
+class Pane:
+    def __init__(self, window):
+        from lightweight_charts import Window
+        self.win: Window = window
+        self.run_script = window.run_script
+        if hasattr(self, 'id'):
+            return
+        self.id = Window._id_gen.generate()
 
 
 class IDGen(list):
@@ -14,6 +26,13 @@ class IDGen(list):
         self.generate()
 
 
+def parse_event_message(window, string):
+    name, args = string.split('_~_')
+    args = args.split(';;;')
+    func = window.handlers[name]
+    return func, args
+
+
 def jbool(b: bool): return 'true' if b is True else 'false' if b is False else None
 
 
@@ -27,6 +46,12 @@ CROSSHAIR_MODE = Literal['normal', 'magnet']
 
 PRICE_SCALE_MODE = Literal['normal', 'logarithmic', 'percentage', 'index100']
 
+TIME = Union[datetime, pd.Timestamp, str]
+
+NUM = Union[float, int]
+
+FLOAT = Literal['left', 'right', 'top', 'bottom']
+
 
 def line_style(line: LINE_STYLE):
     js = 'LightweightCharts.LineStyle.'
@@ -65,6 +90,7 @@ class Emitter:
     def _emit(self, *args):
         self._callable(*args) if self._callable else None
 
+
 class JSEmitter:
     def __init__(self, chart, name, on_iadd, wrapper=None):
         self._on_iadd = on_iadd
@@ -78,7 +104,7 @@ class JSEmitter:
         async def final_async_wrapper(*arg):
             await other(self._chart, *arg) if not self._wrapper else await self._wrapper(other, self._chart, *arg)
 
-        self._chart._handlers[self._name] = final_async_wrapper if asyncio.iscoroutinefunction(other) else final_wrapper
+        self._chart.win.handlers[self._name] = final_async_wrapper if asyncio.iscoroutinefunction(other) else final_wrapper
         self._on_iadd(other)
         return self
 
@@ -89,7 +115,7 @@ class Events:
         from lightweight_charts.abstract import JS
         self.search = JSEmitter(chart, f'search{chart.id}',
             lambda o: chart.run_script(f'''
-            {JS['callback'] if not chart._callbacks_enabled else ''}
+            {JS['callback']}
             makeSpinner({chart.id})
             {chart.id}.search = makeSearchBox({chart.id})
             ''')