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.

docs/source/examples/gui_examples.md

@@ -0,0 +1,98 @@
+# Alternative GUI's
+
+
+## PyQt5 / PySide6
+
+```python
+import pandas as pd
+from PyQt5.QtWidgets import QApplication, QMainWindow, QVBoxLayout, QWidget
+
+from lightweight_charts.widgets import QtChart
+
+app = QApplication([])
+window = QMainWindow()
+layout = QVBoxLayout()
+widget = QWidget()
+widget.setLayout(layout)
+
+window.resize(800, 500)
+layout.setContentsMargins(0, 0, 0, 0)
+
+chart = QtChart(widget)
+
+df = pd.read_csv('ohlcv.csv')
+chart.set(df)
+
+layout.addWidget(chart.get_webview())
+
+window.setCentralWidget(widget)
+window.show()
+
+app.exec_()
+```
+___
+
+
+
+## WxPython
+
+```python
+import wx
+import pandas as pd
+
+from lightweight_charts.widgets import WxChart
+
+
+class MyFrame(wx.Frame):
+    def __init__(self):
+        super().__init__(None)
+        self.SetSize(1000, 500)
+
+        panel = wx.Panel(self)
+        sizer = wx.BoxSizer(wx.VERTICAL)
+        panel.SetSizer(sizer)
+
+        chart = WxChart(panel)
+
+        df = pd.read_csv('ohlcv.csv')
+        chart.set(df)
+
+        sizer.Add(chart.get_webview(), 1, wx.EXPAND | wx.ALL)
+        sizer.Layout()
+        self.Show()
+
+
+if __name__ == '__main__':
+    app = wx.App()
+    frame = MyFrame()
+    app.MainLoop()
+```
+___
+## Jupyter
+
+```python
+import pandas as pd
+from lightweight_charts import JupyterChart
+
+chart = JupyterChart()
+
+df = pd.read_csv('ohlcv.csv')
+chart.set(df)
+
+chart.load()
+```
+___
+
+## Streamlit
+
+```python
+import pandas as pd
+from lightweight_charts.widgets import StreamlitChart
+
+chart = StreamlitChart(width=900, height=600)
+
+df = pd.read_csv('ohlcv.csv')
+chart.set(df)
+
+chart.load()
+```