Class Properties

Introduction

We've added extra ways to inspect and understand the static properties of a class.

Function	Purpose
`get_class_properties()`	return the static properties of a class
`has_class_properties()`	does the class have static properties at all?
`FilterClassProperties::from()`	extract the static properties of a class
`HasClassProperties::check()`	does the class have static properties?
`IsClassProperty::check()`	is the `ReflectionProperty` a class property?