Implement Iterator, Countable and ArrayAccess

[mnapoli]

Implement Iterator, Countable and ArrayAccess to be able to use count(), foreach, …

See this comment on Reddit for the original idea.

[chriseskow]

What would the use case be? Instances of the class in the Reddit comment appear to represent the collection of all possible values of the enumeration. However, instances of this enum class represent single values of the enumeration. How would iterating/counting/accessing over a single value work?

[mnapoli]

Woops you're right :S in my head at the time I was thinking about iterating over every value of the enum (returned by toArray()) but indeed it doesn't make sense in this class... The idea doesn't apply here (toArray() is nice enough anyway).