Unable to install with extensions via pip

[blueoceancruiser]

Description

Thanks for this promising package.

Reproduction steps

I can run pip install panel-highcharts but not pip-install panel-highcharts[examples]. The latter gives me a "no matches found" error.

Requirements

panel-highcharts-20221018.1
panel==0.14.4
matplotlib==3.7.1
numpy==1.24.3
pandas==2.0.1pip

___installed--
node 10.24.1
python 3.11
running on Mac M1 Studio

Code

n/a

Logs

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Additional Context

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