Enable `Text` widget #35

Job	Run time
cargo fmt	13s
cargo doc (windows-latest)	1m 18s
cargo clippy + test (windows-latest)	1m 56s
cargo doc (macos-latest)	36s
cargo clippy + test (macos-latest)	52s
cargo doc (ubuntu-latest)	27s
cargo clippy + test (ubuntu-latest)	1m 22s
	6m 44s

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