Remove method, minor cleanup, per discussion with @fredkiefer

Source/GSControllerTreeProxy.h

@@ -38,8 +38,6 @@ extern "C" {
   NSTreeController *_controller;
 }
 
-+ (NSMutableDictionary *) dictionaryWithChildren: (NSMutableArray *)children;
-
 - (instancetype) initWithContent: (id)content
                   withController: (id)controller;
 

Source/GSControllerTreeProxy.m

@@ -33,18 +33,15 @@
 
 @implementation GSControllerTreeProxy
 
-+ (NSMutableDictionary *) dictionaryWithChildren: (NSMutableArray *)children
-{
-  return [NSMutableDictionary dictionaryWithObject: children
-					    forKey: @"children"];
-}
-
 - (instancetype) initWithContent: (id)content
 		  withController: (id)controller
 {
-  self = [super initWithRepresentedObject:
-		  [GSControllerTreeProxy
-		    dictionaryWithChildren: content]];
+  NSMutableDictionary *dict =
+    [NSMutableDictionary dictionaryWithObject:
+	       [NSMutableArray arrayWithArray: children]
+				       forKey: @"children"];
+
+  self = [super initWithRepresentedObject: dict];
   if (self != nil)
     {
       ASSIGN(_controller, controller);

Source/NSOutlineView.m

@@ -1789,6 +1789,10 @@ Also returns the child index relative to this parent. */
       if (theBinding != nil)
 	{
 	  [self _indexPathsFromSelectedRows];
+	  if ([observedObject respondsToSelector: @selector(setSelectionIndexPaths:)])
+	    {
+	      [observedObject setSelectionIndexPaths: _selectedIndexPaths];
+	    }
 	  [theBinding reverseSetValue: _selectedIndexPaths];
 	}
     }

Source/NSTreeController.m

@@ -231,7 +231,7 @@
       [selectedObjects addObject: obj];
     }
   END_FOR_IN(_selection_index_paths);
-  
+
   return selectedObjects;
 }
 

Source/NSTreeNode.m

@@ -32,7 +32,7 @@
 #import <Foundation/NSString.h>
 #import <Foundation/NSSortDescriptor.h>
 
-#import <AppKit/NSTreeNode.h>
+#import "AppKit/NSTreeNode.h"
 
 @interface NSTreeNode (Private)
 - (NSMutableArray*) _childNodes;