CHANGELOG# v5.21.0 Update Grammar, Optimization & Regex Left Recursion Analysis Error Reporting Tooling, Build & Documentation v5.20.0 Update Sibling Projects 铁修 TieXiu ⻰OGoPEGo Internals g2e (ANTLR to TatSu) Tools JSON Grammar Syntax v5.19.0 Refactoring and Modernization Grammar Syntax Command Line Generated Parsers Implementation Deprecations v5.18.0 Grammars / EBNF Semantics and Module Hierarchy Model Representations Separation of State and Content Deprecations and Removals v5.17.1 The Overdue Major Refactoring The Refactoring User-Facing Changes