Create an aggregate from subset of messages #589

Job	Run time
check	30s
wasm-test (1.67, wasm32-unknown-unknown)	3m 54s
python-test (stable, wasm32-unknown-unknown, 3.11)	1m 47s
wasm-test (stable, wasm32-unknown-unknown)	3m 43s
yarn-test (stable, wasm32-unknown-unknown)	3m 5s
python-test (stable, wasm32-unknown-unknown, 3.12)	1m 50s
test (x86_64-unknown-linux-gnu, 1.67)	2m 40s
test (x86_64-unknown-linux-gnu, stable)	2m 42s
codecov	7m 26s
compile-benchmarks	3m 22s
benchmark	0s
	30m 59s

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