[V3] Implement new Concept Exercise: inheritance

[biancapower]

This issue describes how to implement the inheritance concept exercise for the Ruby track.

Getting started

Please please please read the docs before starting. Posting PRs without reading these docs will be a lot more frustrating for you during the review cycle, and exhaust Exercism's maintainers' time. So, before diving into the implementation, please read up on the following documents:

• The features of v3.
• Rationale for v3.
• What are concept exercise and how they are structured?

Please also watch the following video:

• The Anatomy of a Concept Exercise.

Goal

The goal of this exercise is to teach the student the Concept of Inheritance in Ruby.

Learning objectives

• Know what inheritance is.
• Know how to inherit from a class.
• Know that all types inherit from object.

Out of scope

N/A

Concepts

• inheritance
• objects

Prerequisites

• classes

Any data types used in this exercise (e.g. strings) should also be added as prerequisites.

Resources to refer to

Hints

• What is Inheritance in Ruby?

After

• Ruby Inheritance and Object Hierarchy
• Ruby Docs on Inheritance

Representer

This exercise does not require any specific representation logic to be added to the representer.

Analyzer

This exercise does not require any specific analyzer logic to be added to the analyzer.

Implementing

To implement this exercise, please follow these instructions.

Help

If you have any questions while implementing the exercise, please post the questions as comments in this issue.

[iHiD]

@biancapower I'd still love someone to do these. Any reason to close them?