Streaming EDIFACT tokenizer and SAX-style event-driven parser.

This crate provides a standalone EDIFACT parser with no BO4E dependency. It can be used by anyone in the Rust ecosystem for generic EDIFACT parsing.

Architecture

The parser uses a SAX-style streaming model:

1. Tokenizer splits raw bytes into segments
2. Parser routes segments to handler callbacks
3. Handler accumulates state as needed