libxml-rs 0.1.0-alpha.7

Phase 6: Validation family (DTD, XML Schema, RELAX NG, Schematron). Native-Rust forensic reimplementation of libxml2+libxslt with C ABI drop-in replacement. 802 tests passing, DTD validation, XML Schema parser+validator (45+ built-in datatypes), RELAX NG grammar+validation, ISO Schematron rules+patterns, full C ABI exports.
Documentation 
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//! Canonical XML implementation (§28, §85 Phase 7).
//!
//! Inclusive and exclusive canonicalization, comments, namespace propagation,
//! attribute ordering, character escaping, subsets, node sets.
//! Must be byte-exact compared to oracle.
//!
//! Phase 0: scaffolded. Implementation begins in Phase 7.