v3.4.0

What's Changed

• Standardizing the description of various regions in China by @bailyzheng in #57
• Update country_code_picker.dart by @ShahanMalik in #59
• Update selection_dialog.dart by @ShahanMalik in #60
• Release 3.4.0 by @chandrabezzo in #65

New Contributors

• @bailyzheng made their first contribution in #57
• @ShahanMalik made their first contribution in #59

Full Changelog: 3.3.1...3.4.0