Support ..= for --version-range (#198) #2540

Job	Run time
miri	1m 3s
test (stable)	7m 56s
test (beta)	7m 34s
test (nightly)	6m 45s
test (nightly, macos-11)	9m 37s
test (nightly, windows-2019)	3m 25s
build (aarch64-unknown-linux-gnu)	1m 35s
build (aarch64-unknown-linux-musl)	1m 47s
build (aarch64-apple-darwin)	2m 2s
build (aarch64-pc-windows-msvc)	3m 13s
build (x86_64-unknown-linux-gnu)	1m 23s
build (x86_64-unknown-linux-musl)	1m 36s
build (x86_64-apple-darwin)	2m 13s
build (x86_64-pc-windows-msvc)	3m 7s
build (x86_64-unknown-freebsd)	1m 57s
test (1.26)	12m 42s
test (1.30)	8m 20s
test (1.31)	11m 7s
test (1.36)	10m 17s
test (1.39)	9m 55s
test (1.41)	11m 48s
msrv / msrv	4m 19s
deny / deny	20s
tidy / tidy	2m 24s
	2h 6m 25s

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