Tree style builder #294

Job	Run time
cargo clippy (windows-latest)	3m 27s
cargo clippy (macos-latest)	1m 52s
cargo check (msrv) (android) (armv7-linux-androideabi)	32s
cargo check (msrv) (windows-latest)	1m 13s
cargo check (msrv) (android) (aarch64-linux-android)	36s
cargo check (msrv) (macos-latest)	36s
cargo check (msrv) (android) (x86_64-linux-android)	34s
cargo check (msrv) (ubuntu-latest)	29s
cargo clippy (ubuntu-latest)	1m 52s
cargo clippy (android) (armv7-linux-androideabi)	1m 34s
cargo doc (windows-latest)	2m 17s
cargo clippy (android) (aarch64-linux-android)	1m 37s
cargo fmt	21s
cargo doc (macos-latest)	24s
cargo clippy (android) (x86_64-linux-android)	1m 34s
cargo doc (ubuntu-latest)	17s
cargo test (windows-latest)	4m 21s
cargo test (macos-latest)	2m 1s
typos	11s
cargo test (ubuntu-latest)	1m 53s
	27m 41s

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