Codec partial encoders #683

Job	Run time
clippy	45s
build_and_test_macos (macos-13)	2m 43s
build_and_test_windows	2m 57s
build_and_test (stable, --features "")	2m 15s
build_and_test_macos (macos-latest)	1m 7s
build_and_test (stable, --all-features)	2m 31s
codecov	2m 24s
build_and_test (stable, --no-default-features)	1m 51s
fmt	38s
build_and_test (1.76, --features "")	1m 47s
minimal-versions	52s
build_and_test (1.76, --all-features)	2m 52s
semver	1m 53s
build_and_test (1.76, --no-default-features)	1m 38s
build_and_test (beta, --features "")	1m 45s
build_and_test (beta, --all-features)	2m 50s
build_and_test (beta, --no-default-features)	1m 28s
build_and_test (nightly, --features "")	1m 50s
build_and_test (nightly, --all-features)	1m 52s
build_and_test (nightly, --no-default-features)	1m 7s
	37m 5s

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