Allow extra arguments to ic call

[Joaq33]

This change allows you to add extra keyworded arguments to your ic function call.
This solves a problem that I faced when I wanted my list prints to be customized, but ic didn't allow me to change the argToStringFunction's optional arguments. As an example, the default function that works in the background to format the input, pprint.pformat, could accept the optional arguments such as compact, but ic doesn't handle those.

Code:

l = [111111, 222222, 333333, 444444, 555555, 666666, 777777, 888888, 999999, 101010, 111111]

ic(l, compact=True) # this would fails without this commit
ic(l)

Output:

ic| l: [111111, 222222, 333333, 444444, 555555, 666666, 777777, 888888, 999999, 101010,
        111111]
ic| l: [111111,
        222222,
        333333,
        444444,
        555555,
        666666,
        777777,
        888888,
        999999,
        101010,
        111111]

Also, this supports the usage of kwargs in user created argToStringFunction

*I hope you like it, this is my first open source contribution