refactor: faster iteration #268

Job	Run time
build sdist	13s
coverage	1m 35s
test on ubuntu	1m 17s
test 3.7	41s
test on macos	4m 57s
test 3.8	44s
test on windows	3m 32s
test 3.9	40s
test 3.10	38s
test 3.11	39s
build on ${{ matrix.os }} (${{ matrix.target }} - ${{ matrix.interpreter \|\| 'all' }}${{ (((matrix.os == 'linux') && format(' - {0}', (((matrix.manylinux == 'auto') && 'manylinux') \|\| matrix.manylinux))) \|\| '') }})	0s
test 3.12	45s
test pypy3.7	1m 27s
test pypy3.8	1m 10s
build pgo-optimized on ${{ matrix.os }} / ${{ matrix.interpreter }}	0s
test pypy3.9	1m 1s
test pypy3.10	3m 31s
test build on ${{ matrix.os }}	0s
inspect-pypi-assets	0s
check	2s
release	1s
	22m 53s

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