Rename `use-serde` feature into `serde` (#146) #231

Job	Run time
Unit and Doc Tests (Rust MSRV on ubuntu-latest)	36s
Style Check (clippy)	50s
Unit and Doc Tests (Rust MSRV on windows-latest)	1m 27s
Integration Tests (Rust Stable with curl-client)	53s
Code Coverage (stable/ubuntu-latest)	1m 23s
Unit and Doc Tests (Rust MSRV on macOS-latest)	1m 38s
Integration Tests (Rust Stable with h1-client)	1m 4s
README Format Check	1m 3s
Unit and Doc Tests (Rust Stable on ubuntu-latest)	26s
Integration Tests (Rust Stable with h1-client-rustls)	55s
Unit and Doc Tests (Rust Stable on windows-latest)	1m 17s
Integration Tests (Rust Stable with hyper-client)	52s
Style Checks (rustfmt)	12s
Integration Tests (Rust Stable with reqwest-client-rustls)	57s
Unit and Doc Tests (Rust Stable on macOS-latest)	39s
Integration Tests (Rust Stable with reqwest-client-native-tls)	57s
Unit and Doc Tests (Rust Beta on ubuntu-latest)	31s
Integration Tests (Rust Stable with reqwest-client-native-tls-vendored)	1m 54s
Unit and Doc Tests (Rust Beta on windows-latest)	1m 47s
Unit and Doc Tests (Rust Beta on macOS-latest)	1m 10s
Unit and Doc Tests (Rust Nightly on ubuntu-latest)	33s
Unit and Doc Tests (Rust Nightly on windows-latest)	1m 43s
Unit and Doc Tests (Rust Nightly on macOS-latest)	43s
pages	9s
	23m 39s

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