Asio support for int24 #934

Job	Run time
android-check	37s
android-apk-build	1m 43s
cargo-publish	0s
asmjs-wasm32-test (wasm32-unknown-emscripten)	49s
clippy-test	47s
ios-build	4m 1s
linux-check-and-test-armv7	1m 31s
macos-test	1m 34s
rustfmt-check	4s
ubuntu-test	32s
wasm32-bindgen-test (wasm32-unknown-unknown)	23s
wasm32-wasi-test (wasm32-wasi)	14s
wasm-beep-build	36s
windows-test (x86_64)	4m 46s
windows-test (i686)	3m 24s
	21m 1s

Provide feedback