Support the `[project]` section (PEP 621) #359

Job	Run time
pre-commit	41s
test (3.7, 1.2.2)	2m 15s
test (3.7, 1.3.2)	1m 32s
test (3.7, 1.4.2)	1m 13s
test (3.7, 1.5.1)	1m 19s
test (3.8, 1.2.2)	1m 49s
test (3.8, 1.3.2)	1m 31s
test (3.8, 1.4.2)	1m 6s
test (3.8, 1.5.1)	1m 8s
test (3.8, 1.6.1)	1m 8s
test (3.8, 1.7.1)	1m 7s
test (3.8, 1.8.1)	59s
test (3.9, 1.2.2)	2m 0s
test (3.9, 1.3.2)	1m 30s
test (3.9, 1.4.2)	1m 8s
test (3.9, 1.5.1)	1m 7s
test (3.9, 1.6.1)	1m 11s
test (3.9, 1.7.1)	1m 7s
test (3.9, 1.8.1)	1m 2s
test (3.10, 1.2.2)	2m 2s
test (3.10, 1.3.2)	1m 33s
test (3.10, 1.4.2)	1m 16s
test (3.10, 1.5.1)	1m 4s
test (3.10, 1.6.1)	1m 4s
test (3.10, 1.7.1)	1m 4s
test (3.10, 1.8.1)	1m 6s
test (3.11, 1.2.2)	1m 57s
test (3.11, 1.3.2)	1m 26s
test (3.11, 1.4.2)	1m 1s
test (3.11, 1.5.1)	1m 4s
test (3.11, 1.6.1)	1m 4s
test (3.11, 1.7.1)	1m 3s
test (3.11, 1.8.1)	58s
test (3.11, git+https://github.com/radoering/poetry.git@pep621-support)	59s
	43m 34s

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