Fix #235 allocatable classes #229

Job	Run time
Build wheel for cp38-manylinux x86_64	2m 25s
Build wheel for cp39-manylinux x86_64	2m 27s
Build wheel for cp310-manylinux x86_64	2m 29s
Build wheel for cp311-manylinux x86_64	2m 21s
Build wheel for cp312-manylinux x86_64	2m 22s
Build wheel for cp38-macosx x86_64	3m 42s
Build wheel for cp39-macosx x86_64	3m 40s
Build wheel for cp310-macosx x86_64	3m 42s
Build wheel for cp311-macosx x86_64	3m 22s
Build wheel for cp312-macosx x86_64	3m 32s
Build wheel for cp38-win AMD64	2m 13s
Build wheel for cp39-win AMD64	1m 38s
Build wheel for cp310-win AMD64	2m 8s
Build wheel for cp311-win AMD64	2m 8s
Build wheel for cp312-win AMD64	2m 11s
Build wheel for cp39-macosx arm64	3m 9s
Build wheel for cp310-macosx arm64	2m 20s
Build wheel for cp311-macosx arm64	2m 6s
Build wheel for cp312-macosx arm64	1m 59s
	49m 54s

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