Release 2.1.0

Author: theodorejb

CHANGELOG.md

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+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
+
+## [2.1.0] Uncontrolled Space - 2026-04-26
+
+### Added
+- `parseWithoutProcessing()` method.
+
+### Changed
+- Optimized whitespace control and lexer position advancement.
+- Removed underscore from `PathExpression::this_` to align with the Handlebars.js AST.
+
+### Fixed
+- Close tag indentation wasn't consistently stripped from chained `{{else if}}` branches of a standalone block.
+- Tilde whitespace control in one `{{~else if}}` branch unexpectedly leaked onto unrelated branches.
+
+Both of the above issues stemmed from bugs in the Handlebars.js parser, and I opened PR
+[handlebars-lang/handlebars-parser#31](https://github.com/handlebars-lang/handlebars-parser/pull/31) to also fix them there.
+
+
+## [2.0.0] Stateless Parser - 2026-04-02
+
+### Changed
+- Moved the optional `ignoreStandalone` parameter from `ParserFactory::create()` to the `Parser::parse()` method.
+  This makes the parser instance independent of options so it can be reused when compiling multiple templates,
+  enabling better performance and lower memory usage.
+
+
+## [1.1.2] Zero Head - 2026-04-01
+
+### Fixed
+- Parsing of `0` as path expression head (https://github.com/devtheorem/php-handlebars/issues/16).
+
+### Changed
+- Optimized parser slightly by replacing a few unnecessary `preg_match` calls.
+
+
+## [1.1.1] Root SubExpression - 2026-03-23
+
+### Fixed
+- Parsing of SubExpressions that are PathExpression roots.
+
+
+## [1.1.0] Optimal Lexer - 2026-02-24
+
+This release will be the foundation for [PHP Handlebars](https://github.com/devtheorem/php-handlebars) 1.0.
+
+### Changed
+- Optimized position tracking to avoid per-token full-text rescans.
+- Made use of the `preg_match()` offset parameter and `\G` anchor to avoid per-token string allocations.
+- Combined alternation pattern per state: replaced N separate `preg_match()` calls (one per rule) with a single
+  call against a per-state `/\G(?:(rule0)|(rule1)|...)/` pattern, letting PCRE try all alternatives in one pass.
+
+### Added
+- Benchmark to test parsing a large, complex template 1000 times.
+
+In this release, parsing a complex, 13 KB Handlebars template is now about 30x faster than in v1.0.0.
+
+
+## [1.0.0] Initial Release - 2026-02-20
+
+The full Handlebars.js grammar, whitespace control, and parse error handling is now implemented in native PHP.
+
+
+[2.1.0]: https://github.com/devtheorem/php-handlebars-parser/compare/v2.0.0...v2.1.0
+[2.0.0]: https://github.com/devtheorem/php-handlebars-parser/compare/v1.1.2...v2.0.0
+[1.1.2]: https://github.com/devtheorem/php-handlebars-parser/compare/v1.1.1...v1.1.2
+[1.1.1]: https://github.com/devtheorem/php-handlebars-parser/compare/v1.1.0...v1.1.1
+[1.1.0]: https://github.com/devtheorem/php-handlebars-parser/compare/v1.0.0...v1.1.0
+[1.0.0]: https://github.com/devtheorem/php-handlebars-parser/tree/v1.0.0