Add changelog

Author: theodorejb

CHANGELOG.md

@@ -3,6 +3,18 @@ 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/).
 
+## [1.2.0] Frame API - 2026-03-27
+
+### Added
+- `Handlebars::createFrame()`: creates a child `@data` frame inheriting fields from a parent frame,
+  equivalent to `Handlebars.createFrame()` in Handlebars.js.
+
+### Fixed
+- Block param path lookups and literal path lookups (e.g. `{{"foo"}}`, `{{#"foo"}}`) in `strict`
+  mode no longer incorrectly throw when the key exists but its value is `null`.
+- Inline partials defined inside an `{{else}}` block no longer leak into the surrounding scope.
+
+
 ## [1.1.0] Dynamic Partial Resolution - 2026-03-26
 
 ### Added