Support compound stream matchers #901

Job	Run time
Rubocop	26s
Ruby 2.7 (Windows)	3m 47s
Legacy Ruby Builds (2.1.9)	1m 24s
Ruby 3.3	2m 44s
Ruby 2.6 (Windows)	3m 16s
Legacy Ruby Builds (2.0)	1m 23s
Ruby 2.5 (Windows)	2m 30s
Ruby 3.2	2m 27s
Legacy Ruby Builds (1.9.3)	1m 24s
Ruby 2.4 (Windows)	1m 57s
Ruby 3.1	2m 36s
Ruby 2.3 (Windows)	2m 16s
Legacy Ruby Builds (1.9.2)	2m 18s
Ruby 3.0	2m 45s
Ruby 2.2 (Windows)	1m 57s
Legacy Ruby Builds (1.8.7)	1m 15s
Ruby 2.7	2m 58s
Legacy Ruby Builds (REE)	1m 28s
Ruby 2.6	4m 0s
Legacy Ruby Builds (JRuby 1.7)	4m 16s
Ruby 2.5	3m 50s
Legacy Ruby Builds (JRuby 1.7 1.8 mode)	44s
Ruby 2.4	2m 30s
Legacy Ruby Builds (JRuby 9.1.17.0)	4m 50s
Ruby 2.3	2m 27s
Ruby 2.2	2m 57s
Ruby ruby-head	1m 23s
Ruby jruby-9.2.13.0	7m 44s
Ruby 2.7 with diff-lcs 1.3	2m 58s
Ruby 2.7 with diff-lcs 1.4.3	2m 54s
	1h 19m 24s

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