docs: add initial changelog for project release 0.1.0

Author: pedroab0

CHANGELOG.md

@@ -0,0 +1,22 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.0] - 2025-10-27
+
+Initial release.
+
+### Added
+
+- `useSWRCreate` hook for creating data with optimistic updates
+- `useSWRUpdate` hook for updating data with optimistic updates
+- `useSWRDelete` hook for deleting data with optimistic updates
+- `mutateById` utility to mutate cache entries by ID
+- `mutateByGroup` utility to mutate cache entries by group
+- `resetCache` utility to clear cache with optional key preservation
+- `MutationError` class with context and helper methods
+- `to()` helper for Go-style error handling
+- Full TypeScript support with generics
+- Comprehensive JSDoc documentation
+
+[0.1.0]: https://github.com/pedroab0/swr-catalyst/releases/tag/v0.1.0