Merge pull request #5203 from xtermjs/Tyriar-patch-1 #924

Job	Run time
build	1m 12s
lint	1m 8s
test-integration (18, ubuntu, chromium)	3m 36s
test-unit (18, ubuntu)	1m 43s
test-integration (18, ubuntu, firefox)	3m 53s
test-unit (18, macos)	1m 47s
test-unit (18, windows)	7m 26s
test-integration (18, ubuntu, webkit)	3m 12s
test-unit-coverage	1m 14s
release-dry-run (18)	2m 10s
	27m 21s

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