Merge pull request #491 from kivikakk/release/v0.30.0 #1107

Job	Run time
clippy_format	2m 29s
build_bin_spec (nightly)	1m 7s
build_lib_test (nightly)	53s
build_bin_spec (beta)	1m 11s
build_wasm (nightly)	48s
build_lib_test (beta)	1m 25s
lockfile	1m 9s
build_bin_spec (stable)	1m 2s
build_wasm (beta)	50s
build_lib_test (stable)	1m 16s
build_bin_spec ($MSRV)	3m 3s
build_wasm (stable)	43s
build_lib_test ($MSRV)	3m 32s
build_wasm ($MSRV)	2m 42s
no_features_build_test (nightly)	39s
no_features_build_test (beta)	29s
no_features_build_test (stable)	23s
no_features_build_test ($MSRV)	2m 31s
	26m 12s

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