Bump to 3.2.0 #431

Job	Run time
Rustfmt	17s
Test (x86_64-unknown-linux-gnu, stable, ubuntu-latest)	4m 53s
Test (x86_64-unknown-linux-gnu, beta, ubuntu-latest)	5m 26s
Test (x86_64-unknown-linux-gnu, nightly, ubuntu-latest)	4m 49s
Test (x86_64-apple-darwin, stable, macos-latest)	4m 43s
Test (aarch64-apple-darwin, nightly, macos-latest)	5m 21s
Test (i686-unknown-linux-gnu, stable, ubuntu-latest)	2m 57s
Test (arm-unknown-linux-gnueabi, stable, ubuntu-latest)	3m 20s
Test (aarch64-unknown-linux-gnu, stable, ubuntu-latest)	3m 16s
Test (x86_64-unknown-linux-musl, stable, ubuntu-latest)	2m 41s
Test (x86_64-pc-windows-gnu, stable, ubuntu-latest)	5m 13s
Test (i686-pc-windows-msvc, stable-i686-msvc, windows-2019)	19m 18s
Test (i686-pc-windows-msvc, stable-i686-msvc, windows-2019, yes)	19m 27s
Test (x86_64-pc-windows-msvc, stable-x86_64-msvc, windows-latest)	18m 59s
Test (x86_64-pc-windows-msvc, stable-x86_64-msvc, windows-latest, yes)	19m 38s
Test (x86_64-pc-windows-msvc, stable-x86_64-msvc, windows-latest, installed)	20m 28s
	2h 20m 46s

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