Backbone-like Class Extension Utility

The `class-extend` package provides a utility inspired by Backbone.js's `.extend` method, enabling classical inheritance for JavaScript objects, primarily targeting Node.js environments. It allows developers to create child classes that inherit prototype and static methods from a parent, with an optional constructor definition. Designed before native ES6 `class` syntax was widely adopted, it offers a programmatic way to manage inheritance chains, including access to a `__super__` property for parent prototype referencing. The latest version officially published on npm is `0.1.2`, last updated in 2015. Given its age and the prevalence of native ES6 `class extends` syntax, the package is no longer actively maintained and has a very slow release cadence (effectively none since its last update). Its key differentiator was providing a structured inheritance mechanism in a CommonJS context when native alternatives were less accessible or standardized.