Persist last-used inputs _before_ dying

Closes #188.

Author: ctrueden

src/main/java/org/scijava/module/process/CheckInputsPreprocessor.java

@@ -36,7 +36,6 @@
 import org.scijava.module.ModuleItem;
 import org.scijava.plugin.Parameter;
 import org.scijava.plugin.Plugin;
-import org.scijava.widget.InputHarvester;
 
 /**
  * A preprocessor plugin that does a final check of input parameters,
@@ -45,7 +44,7 @@
  * @author Curtis Rueden
  */
 @Plugin(type = PreprocessorPlugin.class,
-	priority = InputHarvester.PRIORITY - 1)
+	priority = SaveInputsPreprocessor.PRIORITY - 1)
 public class CheckInputsPreprocessor extends AbstractPreprocessorPlugin {
 
 	@Parameter(required = false)

src/main/java/org/scijava/module/process/SaveInputsPreprocessor.java

@@ -53,6 +53,8 @@
 	priority = Priority.VERY_LOW_PRIORITY - 1)
 public class SaveInputsPreprocessor extends AbstractPreprocessorPlugin {
 
+	public static final double PRIORITY = Priority.VERY_LOW_PRIORITY - 1;
+
 	@Parameter
 	private ModuleService moduleService;