Integer Division in Pure Python compressed_segmentation

[xiuliren]

https://github.com/seung-lab/cloud-volume/blob/master/cloudvolume/py_compressed_segmentation.py#L16

current integer division will not work correctly if the mod is 0. For example, 4//2+1 = 3, ceil(4/2)=2

I am not sure whether this is what you want or not. but according to the comment, it seems that.

[william-silversmith]

Hi Jingpeng,

I think this code is not actually doing anything and I should probably remove it at some point. The code that actually works on compressed segmentation is https://pypi.org/project/compressed-segmentation/

It's only under special conditions that the pure python code would ever get called.