Tree style builder #293

Job	Run time
cargo clippy (android) (armv7-linux-androideabi)	1m 20s
cargo check (msrv) (windows-latest)	2m 38s
cargo clippy (android) (aarch64-linux-android)	1m 21s
cargo check (msrv) (android) (armv7-linux-androideabi)	51s
cargo clippy (windows-latest)	1m 15s
cargo check (msrv) (macos-latest)	1m 14s
cargo clippy (android) (x86_64-linux-android)	1m 16s
cargo check (msrv) (android) (aarch64-linux-android)	52s
cargo clippy (macos-latest)	1m 12s
cargo check (msrv) (ubuntu-latest)	1m 0s
cargo check (msrv) (android) (x86_64-linux-android)	49s
cargo clippy (ubuntu-latest)	1m 28s
cargo doc (windows-latest)	2m 40s
cargo fmt	22s
cargo doc (macos-latest)	1m 18s
cargo test (windows-latest)	1m 24s
typos	9s
cargo doc (ubuntu-latest)	1m 3s
cargo test (macos-latest)	1m 21s
cargo test (ubuntu-latest)	1m 30s
	25m 3s

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