[NEEDS INPUT] building out the array transpose method as requested in #146

[notbenh]

While I am not exactly sure why one would use this and if it really belongs in core, it was an fun bit of coding. Currently it always outputs a array of strings even if it was handed a 2d array. I am not sure if this is really what we want to happen here. Also if does not check to see if $fill character is a single character or not, should it? It seems that if you are altering the default then you know what you are doing, though again as I can not really conceive why this is useful I am failing to find a case where this would help.

[notbenh]

In talking with @schwern this should only take arrays of arrays OR arrays of strings. MIXED TYPES OR ANY OTHER REF => EXCEPTION!

[[1,2,3],[1,2,3]]->transpose; # [[1,1],[2,2],[3,3]]
['AA','BB','CC',]->transpose; # ['ABC','ABC']

Oh and make the option for transpose not positional rather make it take a hashref.

[schwern]

And one more example...

[
    [["F", "O", "O"], "BAR", "BAZ"],
    [1, 2, 3]
    ["A", "B", "C"]
]

transposes to...

[
    [["F", "O", "O"], 1, "A"],
    ["BAR", 2, "B"],
    ["BAZ", 3, "C"]
]

Which is to say, in the 2D array case all the items are treated as atoms.

[schwern]

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