Prepare 3.0 #668

Job	Run time
Test with python 3.6 on windows-latest	1m 51s
Test with python 3.7 on windows-latest	1m 23s
Test with python 3.8 on windows-latest	10m 55s
Test with python 3.12 on windows-latest	15m 3s
Test with python 3.8 on macos-latest	3m 56s
Test with python 3.12 on macos-latest	3m 53s
Test with python 2.7 on ubuntu-20.04	35s
Test with python 3.6 on ubuntu-20.04	42s
Test with python 3.7 on ubuntu-latest	42s
Test with python 3.8 on ubuntu-latest	3m 57s
Test with python 3.9 on ubuntu-latest	4m 22s
Test with python 3.10 on ubuntu-latest	4m 20s
Test with python 3.11 on ubuntu-latest	4m 7s
Test with python 3.12 on ubuntu-latest	5m 15s
	1h 1m 1s

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