Prepare 1.13.0 release #1178

Job	Run time
Check tokio02 feature	16s
Build with no-std	12s
Checking fmt and docs	29s
Build and test (ubuntu-latest, nightly)	28s
Check io_safety feature (ubuntu-latest)	19s
Build and test (ubuntu-latest, beta)	31s
Check wasm targets (nightly)	31s
Check io_safety feature (windows-latest)	21s
Check wasm targets (beta)	31s
Cross compile (i686-unknown-linux-gnu)	1m 13s
Build and test (ubuntu-latest, stable)	33s
Check wasm targets (stable)	25s
Cross compile (powerpc-unknown-linux-gnu)	1m 15s
Build and test (windows-latest, nightly)	11s
Cross compile (powerpc64-unknown-linux-gnu)	1m 18s
Build and test (windows-latest, beta)	31s
Cross compile (mips-unknown-linux-gnu)	1m 3s
Build and test (windows-latest, stable)	7s
Build and test (macOS-latest, nightly)	27s
Cross compile (arm-linux-androideabi)	1m 21s
Build and test (macOS-latest, beta)	30s
Build and test (macOS-latest, stable)	30s
	13m 2s

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