pick() should work with lists

[dgilland]

In Lo-Dash:

_.pick([1, 2, 3], 0) == {'0': 1}

In pydash:

pydash.pick([1,2,3], 0)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "pydash/objects.py", line 322, in pick
    return dict((key, value) for key, value in iteritems(obj)
  File "pydash/_compat.py", line 38, in <lambda>
    iteritems = lambda d: d.iteritems()
AttributeError: 'list' object has no attribute 'iteritems'

NOTE: Even though Lo-Dash returns string keys, pydash should use integers.