Point to the RFC process #296

Job	Run time
Book tests	1m 5s
Bitrot check	1m 4s
Code coverage	1m 39s
Rustfmt	10s
Check no-std target thumbv6m-none-eabi	1m 8s
Intra-doc links	1m 7s
Check no-std target wasm32-unknown-unknown	1m 9s
Test on ubuntu-latest with --all-features	1m 8s
Check no-std target wasm32-wasi	1m 9s
Test on ubuntu-latest with --no-default-features	1m 6s
Test on i686-unknown-linux-gnu with --all-features	1m 16s
Test on windows-latest with --all-features	1m 32s
Test on i686-unknown-linux-gnu with --no-default-features	1m 16s
Test on windows-latest with --no-default-features	1m 29s
Test on macOS-latest with --all-features	1m 31s
Test on macOS-latest with --no-default-features	1m 40s
	19m 29s

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