Be more strict when parsing URLs #1298

Job	Run time
build / build	32s
lint / tox	49s
test (macos-latest, 3.12.0-rc.1 - 3.12.0, --cov-fail-under=100) / tox	5m 48s
test (ubuntu-latest, 3.10.13) / tox	3m 52s
test (ubuntu-latest, 3.11.5) / tox	2m 52s
test (ubuntu-latest, 3.12.0-rc.1 - 3.12.0, --cov-fail-under=100) / tox	3m 46s
test (ubuntu-latest, 3.8.18) / tox	2m 16s
test (ubuntu-latest, 3.9.18) / tox	3m 48s
test (windows-latest, 3.12.0-rc.1 - 3.12.0, --cov-fail-under=100) / tox	4m 10s
check / check	4s
deploy	0s
	27m 57s

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