Implemented and tested object identity labeling in 3D with and without connectivity between z-frames

Added generic persistent table functionality to Session

See merge request !14

Patch stack one channel

See merge request !13

Correct error when trying to extract a single channel from a PatchStack

See merge request !12

Generate an InstanceSegmentationModel from an...

See merge request !11

Generate an InstanceSegmentationModel from an IlastikObjectClassifierFromPixelPredictionsModel given binarization parameters

Set default values for time, color, and z-axes in ilastik model validation

See merge request !10

Session exposes a python log

See merge request !9

Resolve "ilastik models do not validate dimensionality of input data"

See merge request !5

Cleared up issues with Singleton behavior, largely confused by the fact this python logger itself is a Singleton that persists between tests

Mocked up session logging implementation using python log service; two tests are failing apparently due to Session singleton-related issues

Test of patch object classification now explicitly excludes single pixels that are labeled differently

Removed PatchStackObjectClassifier, merged this behavior into IlastikObjectClassifierFromSegmentationModel

Raise error if ilastik data not embedded in project file; but it appears that most test classifiers fail this

Changed formatting of object classification path results

See merge request !2

record entry returned by object class map export is no longer a dictionary of paths, but rather one path for object map