This PR adds support for the sharded format of Neuroglancer's precomputed. Most recently published datasets use that format. It can be tested with the datasets that are pre-configured: janelia_flyem_hemibrain,h01_20210601,microns_mm3_broken (which is currently unusable in wk because the color and segmentation layers use different downsampling schemes).
By implementing this, I had to rewrite most of the Neuroglancer implementation. Now, also datasets where one layer is missing mags (e.g. missing mag1 for segmentation) are supported.
normanrz
commented
3 years ago 
This PR adds support for the sharded format of Neuroglancer's precomputed. Most recently published datasets use that format. It can be tested with the datasets that are pre-configured:
janelia_flyem_hemibrain,h01_20210601,microns_mm3_broken(which is currently unusable in wk because the color and segmentation layers use different downsampling schemes).By implementing this, I had to rewrite most of the Neuroglancer implementation. Now, also datasets where one layer is missing mags (e.g. missing mag1 for segmentation) are supported.
Fixes #85