ADD importing pandas #3

Job	Run time
call-workflow / get-branches	7s
call-workflow / build-books (2-awesome-causal-inference-pythonmainatedid)	1m 13s
call-workflow / build-books (main)	1m 26s
call-workflow / build-books (5-awesome-causal-inference-pythonmainatedid)	1m 20s
call-workflow / deploy-books	39s
call-workflow / summarize	2s
	4m 47s

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