Cleanup.
Object workflow: Don't import GUI until someone asks for it. (Headless scripts don't need it.)
OpThresholdTwoLevels: Support both float32 or uint8 input, and use meta.drange to adjust threshold values.
ThresholdTwoLevels: Gui: Expensive layers are not visible by default.
debug args.
cluster: Improved an assertion error message.
cluster: debug args
Pixel Classification: Separated top-level operators into cacheless and GUI parts, to avoid the overhead of even instantiating caches during headless operation.
cluster: Fixed a typo that caused blocks to be queued to the cluster even though their work was already complete.
merge
add lbp features
correct shape of lbp features, but still not finished. Disable from config file for now.
cluster: Added task roiRequestBatch size to cluster config.
cluster: Added config option to set the threadpool size.
cluster: Don't launch tasks for blocks that are already locked by another process.