chore: added chage log file

CHANGELOG.md

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+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+
+## [1.1.2](https://github.com/levi-20/lambda-cron/compare/1.1.1...1.1.2) (2025-04-11)
+### Maintenance Improvements
+* stability improvements
+
+## [1.1.1](https://github.com/levi-20/lambda-cron/compare/1.0.1...1.1.1) (2025-03-07)
+### Feature
+* Yearly schedule is introduced
+### Maintenance
+* Allowed units changed in interval based schedule:
+  - `minute` to `minutes`
+  - `hour` to `hours`
+  - `day` to `days`
+
+
+## [1.0.1](https://github.com/levi-20/lambda-cron/compare/1.0.0...1.0.1) (2025-02-23)
+
+### Maintenance Improvements
+* README update for older versions
+* Documentation update
+
+## [1.0.0]() (2025-02-23)
+### Feature:
+* New and better way to schedule
+* Added validation for various schedules
+

readme.md → README.md

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-<!-- @format -->
-
-> **For version [v0.1.6](https://github.com/levi-20/lambda-cron/releases/tag/0.1.6) or earlier, go [here](https://github.com/levi-20/lambda-cron/tree/9a19b5391d00ee46e322f37f67573b37ead3f0e7).**
-
 # Cron Jobs for Serverless Lambda
 
 [![NPM version](https://img.shields.io/npm/v/lambda-cron.svg)](https://www.npmjs.com/package/lambda-cron)