Add Python 3.13 support; drop Python 3.7 support (#50) #144

Job	Run time
build-sdist	16s
PGO build on ubuntu-latest / 3.8	6m 37s
Build on ubuntu (x86_64 - auto)	1m 44s
PGO build on ubuntu-latest / 3.9	6m 23s
Build on ubuntu (aarch64 - auto)	3m 32s
PGO build on ubuntu-latest / 3.10	6m 0s
Build on macos (x86_64 - auto)	2m 10s
PGO build on ubuntu-latest / 3.11	5m 34s
Build on macos (aarch64 - auto)	1m 59s
PGO build on ubuntu-latest / 3.12	5m 39s
Build on windows (x86_64 - auto)	1m 57s
PGO build on ubuntu-latest / 3.13	5m 43s
Build on windows (i686 - auto)	3m 52s
PGO build on windows-latest / 3.8	7m 13s
Build on windows (aarch64 - auto)	4m 22s
PGO build on windows-latest / 3.9	7m 23s
Build on ubuntu (i686 - auto)	4m 55s
PGO build on windows-latest / 3.10	7m 3s
Build on ubuntu (armv7 - auto)	2m 52s
PGO build on windows-latest / 3.11	6m 14s
Build on ubuntu (ppc64le - auto)	2m 44s
PGO build on windows-latest / 3.12	6m 10s
Build on ubuntu (s390x - auto)	3m 17s
PGO build on windows-latest / 3.13	7m 4s
Build on ubuntu (x86_64 - musllinux_1_1)	3m 10s
PGO build on macos-12 / 3.8	7m 1s
Build on ubuntu (aarch64 - musllinux_1_1)	2m 59s
PGO build on macos-12 / 3.9	6m 40s
PGO build on macos-12 / 3.10	6m 35s
PGO build on macos-12 / 3.11	5m 58s
PGO build on macos-12 / 3.12	5m 59s
PGO build on macos-12 / 3.13	6m 22s
PGO build on macos-14 / 3.10	4m 42s
PGO build on macos-14 / 3.11	4m 29s
PGO build on macos-14 / 3.12	4m 28s
PGO build on macos-14 / 3.13	4m 41s
check	20s
Release	0s
	2h 54m 7s

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