wiki: HTML.PHP 5.0.0 documentation set (23 pages) Adds Expressions & Math and Migration 4.x -> 5.0, and updates Home, sidebar and footer, API reference, Architecture, CLI, Configuration, Diagnostics, Getting Started, ROADMAP, Security, Template Syntax and Testing & CI for 5.0.0: inline %{= EXPR} expressions, dynamic keys, the new math functions and filters, the syntax.expressions gate, and the corrected test figures (386 / 1286) and empty PHPStan baseline.