Expose typestate variables, but #[doc(hidden)] #2473

Job	Run time
build_versions (stable)	11s
Test	40s
build_versions (beta)	16s
Test	31s
Test (charset)	42s
build_versions (1.71.1)	18s
Test (cookies)	49s
Test (charset)	40s
Test (socks-proxy)	51s
Test (cookies)	40s
Test (gzip)	46s
cargo-deny (aarch64-apple-ios)	18s
Test (socks-proxy)	34s
Test (brotli)	43s
cargo-deny (aarch64-linux-android)	21s
Test (gzip)	41s
Test (json)	49s
cargo-deny (i686-pc-windows-gnu)	20s
Test (brotli)	31s
Test (native-tls)	55s
cargo-deny (i686-pc-windows-msvc)	19s
Test (json)	34s
cargo-deny (i686-unknown-linux-gnu)	19s
Test (native-tls)	46s
Docs	1m 3s
cargo-deny (wasm32-unknown-unknown)	18s
cargo-deny (x86_64-apple-darwin)	21s
Lint	29s
cargo-deny (x86_64-apple-ios)	19s
cargo-deny (x86_64-pc-windows-gnu)	18s
cargo-deny (x86_64-pc-windows-msvc)	20s
cargo-deny (x86_64-unknown-linux-gnu)	19s
cargo-deny (x86_64-unknown-redox)	18s
	17m 19s

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