Lightweight-charts

Enhancements:
- added the `create_histogram` method and the `Histogram` object.
- added the `round` parameter to `trend_line` and `ray_line`
- chart.set can now be given line data.


Bug Fixes:
- `NaN` values can now be given when setting data, and will leave a blank space in the data.
- `resize` will now change the chart wrapper’s size as well as the chart itself.

Enhancements:
- The `start_date` parameter of `vertical_span` can take a list or tuple of dates to create multiple vertical lines. 84
- Added style parameters to drawings. 99

Bug Fixes:
- `VerticalSpan.delete()` now works as intended.
- Drawings no longer show up in the legend. 101
- Fixed pandas API types error (thanks jamesbaber1!)

Enhancements:
- Added the `screen` parameter to `Chart`, allowing for monitor selection. This should be an index from 0 (0 = primary monitor, 1= second monitor, etc.)
- `vertical_span` method, allowing for vertical lines/spans to be drawn across the chart. 84
- `set_visible_range` method, which will set the visible range of the chart based on two given dates. 91
- `resize` method, which resizes the chart to the given size. 92
- `sync` will now sync both charts, regardless of which one is scrolled/zoomed. 86

Bug Fixes:
- Fixed `circle` and `square` marker shapes not rendering. 94

Enhancements & Bug Fixes

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 searchbox to be unfocused when the chart is loaded.

Refactoring/Enhancements/Fixes

Breaking Changes:
- Removed the `api` parameter; callbacks no longer need to be in a specific class.
- Topbar callbacks now take a chart as an argument (see updated callback examples)
- Removed the `topbar` parameter from chart declaration. The Topbar will be automatically created upon declaration of a topbar widget.
- Removed the `searchbox` parameter from charts. It will be created upon subscribing to it in `chart.events`.
- Removed `dynamic_loading`.
- Removed `volume_enabled` parameter. Volume will be enabled if the volumn column is present in the dataframe.
- Widgets’ `func` parameter is now declared last.
- Switchers take a tuple of options rather than a variable number of arguments.
- `add_hotkey` renamed to `hotkey`
- Horizontal lines now take a `func` argument rather than `interactive`. This event will emit the Line object that was moved.
- Removed the `name` parameter from `line.set`. Line object names are now declared upon creation.

Enhancements:
- Added the `button` widget to the Topbar. (52)
- Added the color picker to the drawing context menu.
- Charts now have a `candle_data` method, which returns the current data displayed on the chart as a DataFrame.
- Fixed callbacks are now located in the `chart.events` object:
- search (e.g `chart.events.search += on_search`)
- new_bar
- range_change
- Added volume to the legend.
- Legend will now follow the precision of the chart (65)
- Drawings can now be accessed through `chart.toolbox.drawings`
- added the `style` and `name` parameters to `create_line` (68)
- Added support for PySide6 (62)

Bug Fixes:
- Fixed a bug causing new charts not to load after `exit` was called. (60)
- Refactored rayline placement to ensure they do not move the visible range. (64)
- Fixed a bug causing the visible range to shift when trendlines are moved past the final candlestick.
- Fixed a bug preventing trendlines and raylines on irregular timeframes. (66)
- Fixed a bug causing the legend to prevent mouse input into the chart.

Enhancements and Bug Fixes

Tables Feature
- Added the `create_table` method, which returns a `Table` object. This can be used to display watchlists, order windows, position windows and more.
- See the new page on the docs for more information!

Bugs
- Fixed a bug preventing the named column of a line to not work as a label of the series.
- Fixed a bug causing drawings loaded from the minute timeframe to not show on a daily timeframe.
- Fixed a bug causing `chart.exit` to not work. (53)
- Fixed a bug preventing the chart from being moved after placing a ray.
- Fixed the ‘price in hoveringOver’ web console error.

Enhancements
- The date/time column can also be the `name` of the passed series object.
- Added the `label` method to `HorizontalLine`, allowing for the price line label of horizontal lines to be updated.
- `None` or an empty DataFrame can now be passed to `line.set` as a means to clear it. (51)
- Seperate Chart objects will now run on the same pywebview instance. This means that any Chart objects created after the first will inherit the first Chart’s API.
- Reorganized the documentation for clarity.