Merge pull request #119 from acardona/patch-1

This PR adds a public method getSegementer to the TrainableSegmentationSegmenter class. The intention is to allow users that run Labkit via scripting to configure the number of threads used during random forest training.
Users might calls getSegmenter().getClassifier().setNumThreads(1)

src/main/java/sc/fiji/labkit/ui/segmentation/weka/TrainableSegmentationSegmenter.java

@@ -348,6 +348,10 @@ public void openModel(final String path) {
 		featureSettings = segmenter.features().settings();
 	}
 
+	public sc.fiji.labkit.pixel_classification.classification.Segmenter getSegmenter() {
+		return segmenter;
+	}
+
 	@Override
 	public int[] suggestCellSize(ImgPlus<?> image) {
 		if (ImgPlusViewsOld.hasAxis(image, Axes.CHANNEL))