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/reference/line.md

@@ -0,0 +1,44 @@
+# `Line`
+
+
+````{py:class} Line(name: str, color: COLOR, style: LINE_STYLE, width: int, price_line: bool, price_label: bool)
+
+The `Line` object represents a `LineSeries` object in Lightweight Charts and can be used to create indicators. As well as the methods described below, the `Line` object also has access to:
+
+[`marker`](#marker), [`horizontal_line`](#AbstractChart.horizontal_line) [`hide_data`](#hide_data), [`show_data`](#show_data) and [`price_line`](#price_line).
+
+Its instance should only be accessed from [create_line](#AbstractChart.create_line).
+___
+
+
+
+```{py:function} set(data: pd.DataFrame) 
+
+Sets the data for the line.
+
+When a name has not been set upon declaration, the columns should be named: `time | value` (Not case sensitive).
+
+Otherwise, the method will use the column named after the string given in `name`. This name will also be used within the legend of the chart.
+
+```
+___
+
+
+
+```{py:function} update(series: pd.Series)
+
+Updates the data for the line.
+
+This should be given as a Series object, with labels akin to the `line.set()` function.
+```
+
+
+
+___
+
+```{py:function} line.delete()
+
+Irreversibly deletes the line.
+
+```
+````