(feat): full v2 compat via python fallback #158

Job	Run time
build sdist	16s
build on linux (x86_64 - 2_28)	4m 16s
build on linux (aarch64 - 2_28)	4m 11s
build on macos (x86_64)	3m 24s
build on macos (aarch64)	4m 20s
build on windows (x86_64)	11m 38s
build on linux (armv7 - 2_28)	4m 43s
build on linux (ppc64le - 2_28)	4m 20s
build on linux (x86_64 - musllinux_1_2)	4m 0s
build on linux (aarch64 - musllinux_1_2)	4m 7s
build on linux (armv7 - musllinux_1_2)	3m 51s
build on windows (i686)	10m 46s
inspect	3s
version	0s
publish	0s
	59m 55s

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