Bzip2 labels, extensions, and option metadata.
This crate is part of the `use-archive` facade workspace. It describes bzip2-related labels and options only. It does not compress, decompress, read bzip2 streams, or write bzip2 streams.
```rust
use use_bzip2::{Bzip2Level, Bzip2Profile, is_bzip2_filename};
assert!(is_bzip2_filename("release.tar.bz2"));
assert_eq!(Bzip2Level::Best.as_str(), "best");
assert_eq!(Bzip2Profile::Compatibility.as_str(), "compatibility");
```