update for v3.1.1

Update to follow best practices for integrating diff in v3.1.1

CHANGELOG.md

@@ -299,12 +299,16 @@ fixed some issues and configured files for publishing diff-ymd-package v2.0.2 on
 
 #### Documentation
 
-- README.md updated: Added consistent formating and recommended for best practices.
+### [v3.1.1]
+
+#### Fixed
+- Updated codebase for updating diff to best practiced 
+- fixed some other issues and configured files for v3.1.1
 
 ### [Next Release] - Collecting issues and new features for next release
 
 ### Important changes links:
 
-- [Unreleased](https://github.com/farhan7reza7/diff-ymd-package/compare/v3.1.0...HEAD)
-- [v3.1.0](https://github.com/farhan7reza7/diff-ymd-package/releases/tag/v3.1.0)
+- [Unreleased](https://github.com/farhan7reza7/diff-ymd-package/compare/v3.1.1...HEAD)
+- [v3.1.1](https://github.com/farhan7reza7/diff-ymd-package/releases/tag/v3.1.1)
 - [Next Release](https://github.com/farhan7reza7/diff-ymd-package/milestone/2)