VoxelsAccessor.shape is XYZ ordered, while getitem is ZYX ordered

[grisaitis]

I think VoxelsAccessor.shape needs to be reverse of what it is now.

For example:

>>> va = VoxelsAccessor("slowpoke3:32773", "e402c09ddd0f45e980d9be6e9fcb9bd0", "grayscale")
>>> va.shape
(1, 6446, 6643, 8090)

but

>>> va[0, 7888, 2668, 4176]
91

If you believe the shape, that last bit should return 0 (or whatever the fill value is), because the coordinate (7888, 2668, 4176) is outside the shape (6446, 6643, 8090).

Indeed,

>>> import requests
>>> import numpy as np
# this gets the voxel at XYZ location (4176, 2668, 7888)
>>> url = "http://slowpoke3:32773/api/node/e402c09ddd0f45e980d9be6e9fcb9bd0/grayscale/raw/0_1_2/1_1_1/4176_2668_7888/nD"
>>> response = requests.get(url)
>>> x = np.fromstring(response.content, dtype=np.uint8)
>>> print(x)
[91]