updated ChangeLog

Author: nirupama-dev

CHANGELOG.md

@@ -1,5 +1,25 @@
 # Changelog
+All notable changes to this project will be documented in this file.
 
-<!-- <START NEW CHANGELOG ENTRY> -->
+## [1.0.0] - 2025-05-22
+### Added
+- **Initial Public Release of the Scheduler Plugin for JupyterLab.**
+- **Cross-Platform Scheduling:** Full support for creating and managing notebook schedules on both Composer and Vertex environments.
+- **Schedule Management:**
+    - Ability to **create** new notebook schedules.
+    - Comprehensive **listing** of existing schedules.
+    - Functionality to **edit** schedule configurations.
+    - Options to **pause**, **resume**, **retrigger** and **delete** schedules.
+    - **Execution History:** View the execution history and status for all schedules, providing insights into past runs from both Composer and Vertex environments.
 
-<!-- <END NEW CHANGELOG ENTRY> -->
+### Changed
+- N/A (Initial release, no existing features were changed)
+
+### Fixed
+- N/A (Initial release, no known bugs to fix)
+
+### Removed
+- N/A (Initial release, nothing was removed)
+
+### Deprecated
+- N/A (Initial release, no deprecations)