allow pre releases #836

Job	Run time
Test installation using newest version of Taskflow	3m 9s
Test install with generated cython files	3m 21s
Test installation using system supplied libs	2m 59s
Test sse2 code on Linux (gcc)	6m 23s
Python 3.9	5m 6s
Python 3.9	8m 43s
Python 3.9	5m 10s
Python 3.10	4m 49s
Python 3.10	8m 35s
Python 3.10	5m 34s
Python 3.11	4m 41s
Python 3.11	8m 25s
Python 3.11	4m 55s
Python 3.12	5m 0s
Python 3.12	8m 34s
Python 3.12	5m 45s
Python 3.13	5m 39s
Python 3.13	9m 8s
Python 3.13	9m 58s
	1h 55m 54s

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