Bar chart with base defined

[twoxfh]

Appreciate this project, its been very helpful.

I have not found a way to configure the base property of a bar chart as seen in the link below, am I missing something? Does anyone know how I could add it to the bar chart configuration panel if it does not exist?

Appreciate the review.

Bar Chart - jmmease

`
import pandas as pd
import plotly.graph_objs as go
fig = go.FigureWidget()

dates = pd.date_range('2018-01', '2018-12', freq='MS')
fig.add_bar(x=dates,
y=[2, 3, 4, 1, 4, 5, 3, 4, 5, 3, 2, 3],
base=[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12])
fig
`