add a few missing things and finish the metabolism example #11

Job	Run time
Julia 1 - ubuntu-latest - x64	2m 37s
Julia 1 - macOS-latest - x64	3m 40s
Julia 1 - windows-latest - x64	3m 36s
Julia 1.6 - ubuntu-latest - x64	3m 7s
Julia 1.6 - macOS-latest - x64	3m 34s
Julia 1.6 - windows-latest - x64	8m 47s
Julia nightly - ubuntu-latest - x64	1m 27s
Julia nightly - macOS-latest - x64	2m 8s
Julia nightly - windows-latest - x64	2m 23s
	31m 19s

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