persian 0.1.3

Utilities for Persian language/culture. Includes some String extensions and PersianDate class.

[0.0.1] - Initial release.

[0.1.0] - Implements extensions methods.

[0.1.1] - Adds example project.

[0.1.2] - Ditches dependency on Flutter and becomes a native dart package.

[0.1.3] - Improves package health on pub.