add stemplot

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#443 opened on Apr 17, 2020 7 comments 0 reactions 0 assignees View on GitHub

Description

#### Is your feature request related to a problem? Please describe.

I'd like to plot data as stemplot. Seems like there is no stemplot supported yet.

#### Describe the solution you'd like

Porting the functionality from [matplotlib.pyplot.stem](https://matplotlib.org/3.1.1/api/_as_gen/matplotlib.pyplot.stem.html) would be reasonable.

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