Feature: arrays, arrays with sub-index

[pszeptynski]

At the moment, we have an L command that act as a list, but it returns random values from the list. I.e.

!2L["cat", "dog", "bird", "cow"]

returns 2 random values from the list.

It would be nice to have a classic array that stores the values which could be accessed by index as in regular programming languages. I.e.

["cat", "dog", "bird", "cow"][1]

always returns "dog".

You know what I mean by regular array/list. :)