Test

Merge pull request #855 from smasato/update-readme #361

Job	Run time
lint	18s
test (3.3, 7.2, --enable-frozen-string-literal)	1m 24s
test (3.3, 7.1, --enable-frozen-string-literal)	1m 20s
test (3.3, 7.0, --enable-frozen-string-literal)	1m 22s
test (3.3, 6.1, --enable-frozen-string-literal)	1m 23s
test (3.2, 7.2)	1m 12s
test (3.2, 7.1)	1m 11s
test (3.2, 7.0)	1m 17s
test (3.2, 6.1)	1m 10s
test (3.1, 7.1)	1m 21s
test (3.1, 7.0)	1m 21s
test (3.1, 6.1)	1m 17s
test (3.0, 7.0)	1m 19s
test (3.0, 6.1)	1m 16s
test (jruby-9.4.8.0, 7.0)	4m 1s
test (2.7, 7.0)	1m 37s
test (2.7, 6.1)	1m 26s
test (2.7, 6.0)	1m 29s
test (jruby-9.3.15.0, 6.1)	4m 2s
test (2.6, 5.2)	1m 29s
	31m 15s

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