generate import handling #916

Job	Run time
Test install with generated cython files	47s
Test installation using newest version of Taskflow	28s
Test sse2 code on Linux (gcc)	54s
Test installation using system supplied libs	26s
Python 3.9	2m 2s
Python 3.9	3m 39s
Python 3.9	2m 32s
Python 3.10	2m 9s
Python 3.10	3m 29s
Python 3.10	2m 34s
Python 3.11	2m 3s
Python 3.11	4m 14s
Python 3.11	2m 51s
Python 3.12	2m 15s
Python 3.12	3m 13s
Python 3.12	2m 43s
Python 3.13	2m 22s
Python 3.13	4m 45s
Python 3.13	2m 59s
	46m 25s

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