Prepare 1.13.0 release #1198

Job	Run time
Check tokio02 feature	12s
Build with no-std	15s
Check io_safety feature (ubuntu-latest)	19s
Check io_safety feature (windows-latest)	1m 13s
Build and test (ubuntu-latest, nightly)	1m 19s
Check wasm targets (nightly)	2m 44s
Build and test (ubuntu-latest, beta)	1m 44s
Check wasm targets (beta)	2m 48s
Checking fmt and docs	31s
Build and test (ubuntu-latest, stable)	1m 38s
Check wasm targets (stable)	2m 47s
Cross compile (i686-unknown-linux-gnu)	1m 55s
Build and test (windows-latest, nightly)	2m 35s
Build and test (windows-latest, beta)	2m 44s
Cross compile (powerpc-unknown-linux-gnu)	1m 58s
Cross compile (powerpc64-unknown-linux-gnu)	2m 2s
Build and test (windows-latest, stable)	2m 53s
Cross compile (arm-linux-androideabi)	3m 32s
Build and test (macOS-latest, nightly)	1m 18s
Build and test (macOS-latest, beta)	1m 23s
Build and test (macOS-latest, stable)	1m 5s
	36m 55s

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