Update dependencies to latest versions, resolve breaking changes #136

Job	Run time
Build, lint, and test (16.x, ubuntu-latest)	8s
Build, lint, and test (16.x, ubuntu-latest)	22s
Build, lint, and test (16.x, windows-latest)	7s
Build, lint, and test (16.x, windows-latest)	26s
Build, lint, and test (16.x, macOS-latest)	11s
Build, lint, and test (16.x, macOS-latest)	38s
Build, lint, and test (18.x, ubuntu-latest)	7s
Build, lint, and test (18.x, ubuntu-latest)	26s
Build, lint, and test (18.x, windows-latest)	12s
Build, lint, and test (18.x, windows-latest)	23s
Build, lint, and test (18.x, macOS-latest)	10s
Build, lint, and test (18.x, macOS-latest)	39s
Build, lint, and test (20.x, ubuntu-latest)	4s
Build, lint, and test (20.x, ubuntu-latest)	21s
Build, lint, and test (20.x, windows-latest)	2s
Build, lint, and test (20.x, windows-latest)	22s
Build, lint, and test (20.x, macOS-latest)	6s
Build, lint, and test (20.x, macOS-latest)	36s
	5m 20s

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