Napari-accelerated-pixel-and-object-classification

Bug fixes
* Probability mapper called from the plguins menu returned a label image (thanks to lazigu for reporting and fixing)

New features
* `Tools > Measurement > Show feature correlation matrix (pandas, APOC)`

Documentation update

New features
* Visualization of correlation matrix for Object Classifiers
* Standardized colours of classifier statistics display

New features
* Custom feature classifier compatible with other napari-plugins that save measurements in `label.properties`.
* Classifier statistics can now be shown side-by-side with the feature selection widget. Documentation was added to explain how classifier statistics can be used to tune the segmentation result.

Backwards compatibility breaking changes
* The default feature image set was changed: We don't consider the original image anymore by default, but the Sobel-of-Gaussian with radius 1,

Thanks to kevinyamauchi for feedback and support

New features
* After object classification, measurements and `APOC_ObjectClassifier_CLUSTER_ID` are stored in the label layer's properties for potential further analysis