v0.0.2

A few changes to make quick validation of an entire class a little easier.

• [feat] Added passed and failed methods to the Validated class.
• [change] The second parameters of the property method is now nullable.
• [fix] Minor bug fix converting array to string when validation array length.
• [tests] Added a test for custom rules.
• [tests] Added a test for validating the length of an array.