Implement a depth options

[inkstak]

(This feature was already requested in awesome_print)

It whould be nice to implement a depth options:

array = [[1,2], [3,4]]

ap(array)
# [
#    [0] [
#        [0] 1,
#        [1] 2
#    ],
#    [1] [
#        [0] 3,
#        [1] 4
#    ]
# ]

ap(array, depth: 1)
# [
#    [0] [1, 2],
#    [1] [3, 4]
# ]

I intended to make a pull request, but the code is pretty complex, I won't say no to be helped.

[gabrielcosta42]

I created a pull request that adds this feature: #86

[HarlemSquirrel]

@gabrielcosta42 have you had a chance to look over our suggestions in that pull request?