//! Async, range-fetching PDF access for pdfboss: open huge files without
//! loading them, hold many documents concurrently, and read remote PDFs
//! over HTTP range requests. Built sans-I/O style on the synchronous
//! pdfboss-core machinery: bytes are fetched in small windows and handed
//! to the existing sync lexer, parser and filters. The whole file is
//! never read.
pub use HttpBackend;
pub use ;
pub use CachedBackend;
pub use AsyncDocument;
pub use ;
pub use TokioSink;
pub use ElementStream;