Change any glyphs in the sidebar to white when selected to make them visible regardless of use control color selection

Mac/MainWindow/Sidebar/SidebarTableRowView.swift

@@ -0,0 +1,36 @@
+//
+//  SidebarTableRowView.swift
+//  NetNewsWire
+//
+//  Created by Maurice Parker on 8/10/20.
+//  Copyright © 2020 Ranchero Software. All rights reserved.
+//
+
+import AppKit
+
+class SidebarTableRowView : NSTableRowView {
+
+	override var isSelected: Bool {
+		didSet {
+			cellView?.isSelected = isSelected
+		}
+	}
+	
+	init() {
+		super.init(frame: NSRect.zero)
+	}
+
+	required init?(coder: NSCoder) {
+		super.init(coder: coder)
+	}
+	
+	private var cellView: SidebarCell? {
+		for oneSubview in subviews {
+			if let foundView = oneSubview as? SidebarCell {
+				return foundView
+			}
+		}
+		return nil
+	}
+
+}