Bug fixes

0.2.2

Fixed issues with $null. Fixed #1

Second version

This version adds the static methods:

• Structure::ArrayS
• Structure::NumericS
• Structure::IntegerS
• Structure::FloatS

The main abstract class Structure specifies an abstract method format, which gives the proper type to a variable. It is specially powerful for working with arrays and sanitizing external inputs.

Initial version

v0.1.0

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