Derived context values (#164) #656

Job	Run time
Build and run integration tests (18.x)	2m 53s
JS Tests (18.x)	3m 7s
Lint (18.x)	44s
Build and run integration tests (19.x)	3m 1s
JS Tests (19.x)	3m 26s
Lint (19.x)	38s
Build and run integration tests (20.x)	2m 57s
JS Tests (20.x)	3m 7s
Lint (20.x)	40s
Build and run integration tests (21.x)	2m 46s
JS Tests (21.x)	3m 7s
Lint (21.x)	36s
Publish to NPM	33s
	27m 35s

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