Bulk: all for donut-basic #9

Job	Run time
build-matrix	4s
preview	2s
generate (donut-basic, seaborn)	4s
generate (donut-basic, bokeh)	3s
generate (donut-basic, pygal)	3s
generate (donut-basic, highcharts)	3s
generate (donut-basic, plotly)	6s
generate (donut-basic, matplotlib)	3s
generate (donut-basic, letsplot)	6s
generate (donut-basic, altair)	6s
generate (donut-basic, plotnine)	5s
summary	4s
	49s

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