v3.1.2

What's Changed

• integrate diff following recommended practices as the method of Date … by @farhan7reza7 in #171
• Update package.json to publish v3.1.1 on npm by @farhan7reza7 in #173
• Update README.md for following best and recommended practices by @farhan7reza7 in #174
• Update README.md for following best practices by @farhan7reza7 in #175

Full Changelog: v3.1.1...v3.1.2