Unhandled pandas FutureWarning in tests
Haven't investigated:

```
pandas/tests/series/indexing/test_datetime.py::test_getitem_median_slice_bug
  /Users/taugspurger/sandbox/pandas/pandas/core/internals.py:312: FutureWarning: Using a non-tuple sequence for multidimensional indexing is deprecated; use `arr[tuple(seq)]` instead of `arr[seq]`. In the future this will be interpreted as an array index, `arr[np.array(seq)]`, which will result either in an error or a different result.
    return self.values[slicer]
  /Users/taugspurger/sandbox/pandas/pandas/core/indexes/datetimelike.py:429: FutureWarning: Using a non-tuple sequence for multidimensional indexing is deprecated; use `arr[tuple(seq)]` instead of `arr[seq]`. In the future this will be interpreted as an array index, `arr[np.array(seq)]`, which will result either in an error or a different result.
    result = getitem(key)

pandas/tests/series/indexing/test_indexing.py::test_basic_getitem_setitem_corner
  /Users/taugspurger/sandbox/pandas/pandas/core/internals.py:312: FutureWarning: Using a non-tuple sequence for multidimensional indexing is deprecated; use `arr[tuple(seq)]` instead of `arr[seq]`. In the future this will be interpreted as an array index, `arr[np.array(seq)]`, which will result either in an error or a different result.
    return self.values[slicer]
  /Users/taugspurger/sandbox/pandas/pandas/core/indexes/datetimelike.py:429: FutureWarning: Using a non-tuple sequence for multidimensional indexing is deprecated; use `arr[tuple(seq)]` instead of `arr[seq]`. In the future this will be interpreted as an array index, `arr[np.array(seq)]`, which will result either in an error or a different result.
    result = getitem(key)
```