Update version tag to be rc1. #163

Job	Run time
Test (ubuntu-20.04, 3.6)	55s
Test (macos-latest, 3.6)	1m 31s
Test (windows-latest, 3.6)	2m 45s
Test (ubuntu-20.04, 3.7)	49s
Test (macos-latest, 3.7)	1m 14s
Test (windows-latest, 3.7)	2m 10s
Test (macos-latest, 3.8)	1m 14s
Test (windows-latest, 3.8)	1m 40s
Test (macos-latest, 3.9)	1m 11s
Test (windows-latest, 3.9)	2m 18s
Test (macos-latest, 3.10)	1m 7s
Test (windows-latest, 3.10)	2m 34s
Test (ubuntu-20.04, 3.8)	45s
Test (macos-latest, 3.11)	1m 14s
Test (windows-latest, 3.11)	2m 25s
Test (ubuntu-20.04, 3.9)	52s
Test (macos-latest, 3.12)	2m 0s
Test (windows-latest, 3.12)	2m 58s
Test (ubuntu-20.04, 3.10)	50s
Test (macos-latest, pypy-3.8)	1m 14s
Test (windows-latest, pypy-3.8)	1m 45s
Test (macos-latest, pypy-3.9)	1m 15s
Test (ubuntu-20.04, 3.11)	51s
Test (macos-latest, pypy-3.10)	1m 17s
Test (windows-latest, pypy-3.9)	2m 0s
Test (ubuntu-20.04, 3.12)	1m 4s
Test (ubuntu-20.04, pypy-3.8)	56s
Test (windows-latest, pypy-3.10)	1m 52s
Test (ubuntu-20.04, pypy-3.9)	48s
Test (ubuntu-20.04, pypy-3.10)	47s
Build source distribution	12s
Build wheels (3.6+) on ubuntu-20.04 for auto	4m 39s
Build wheels (3.6+) on windows-latest for auto	7m 51s
Generate code coverage report	0s
Build wheels (3.6+) on macos-latest for auto	4m 6s
Build wheels (3.6+) on ubuntu-20.04 for aarch64	9m 39s
Build wheels (3.6+) on macos-latest for arm64	5m 30s
	1h 16m 18s

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