docs: simplify changelog structure and add notes for 2.2.1

Author: dazzatronus

CHANGELOG.md

@@ -1,23 +1,18 @@
-# [2.2.0](https://github.com/shotstack/shotstack-studio-sdk/compare/v2.1.5...v2.2.0) (2026-03-10)
-
+# Changelog
 
-### Bug Fixes
+All notable changes to this project will be documented in this file.
 
-* fixed lint issuue ([937cbf0](https://github.com/shotstack/shotstack-studio-sdk/commit/937cbf0783cd41208636414131cc6d73ca797b0b))
-* strip src from the canvas payload when we've already fetched and parsed the words ([057a935](https://github.com/shotstack/shotstack-studio-sdk/commit/057a9357ad3d4e75fa95846a799f0d6de5c04eb9))
+## [2.2.1] - 2026-03-10
 
+## Fixed
 
-### Features
+- Rotation angles get normalized to schema bounds
 
-* add rich-caption toolbar with layout, word animation, and active word controls ([f7423b7](https://github.com/shotstack/shotstack-studio-sdk/commit/f7423b731b4325974a0a2d5d128451d625921113))
-* add RichCaptionPlayer with word-level caption animations and prevent @napi-rs/canvas from leaking into web bundle ([edb712e](https://github.com/shotstack/shotstack-studio-sdk/commit/edb712e30dadc9b4ca1fa781bf404b5d292ed06b))
-* add stroke styling support to StylePanel and captions ([f0070e4](https://github.com/shotstack/shotstack-studio-sdk/commit/f0070e48d24748c41beb7f9a21d5790982da76bc))
-* update dependencies and enhance rich caption functionality ([95ac5d7](https://github.com/shotstack/shotstack-studio-sdk/commit/95ac5d792f7634e9ef2f426eb3537e58ab3a9d52))
-* update rich caption player and toolbar with new font handling and configuration options ([b1349b1](https://github.com/shotstack/shotstack-studio-sdk/commit/b1349b19d1abc188172c6a5e9346137c879235b3))
+## [2.2.0] - 2026-03-10
 
-# Changelog
+### Added
 
-All notable changes to this project will be documented in this file.
+- add rich-caption toolbar with layout, word animation, and active word controls
 
 ## [2.1.3] - 2026-03-10