v3.1.13

What's Changed

• Update README with Islamic Hijri Calendar link by @farhan7reza7 in #206
• Rename package to 'diff-ymd-package' to release on npm by @farhan7reza7 in #207
• Update Islamic calendar links in README.md by @farhan7reza7 in #208
• Rename package to @farhan7reza7/diff-ymd-package to release on github… by @farhan7reza7 in #209
• Update README.md by @farhan7reza7 in #210
• release v3.1.13 on npm by @farhan7reza7 in #211

Full Changelog: v3.1.10...v3.1.13