FFI

update readme (#295) #238

Job	Run time
Build (x86_64-pc-windows-msvc)	5m 44s
Build (aarch64-pc-windows-msvc)	5m 54s
Build (x86_64-apple-darwin)	6m 49s
Build (aarch64-apple-darwin)	7m 14s
Build (aarch64-apple-ios)	6m 56s
Build (aarch64-apple-ios-sim)	7m 1s
Build (x86_64-unknown-linux-gnu)	3m 15s
Build (aarch64-unknown-linux-gnu)	4m 53s
Build (aarch64-linux-android)	2m 51s
Build (armv7-linux-androideabi)	3m 2s
Build (x86_64-linux-android)	2m 52s
Release to GH (Draft)	0s
	56m 31s

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