Document stuff, add a couple things

Add Retro World State (Open & Retro on)
Add SpriteSomething plug to sprite selector
Fix Custom Item Pool loading to use disct instead of list

gui/randomize/dungeon.py

@@ -1,4 +1,4 @@
-from tkinter import ttk, IntVar, StringVar, Checkbutton, Frame, Label, OptionMenu, E, W, LEFT, RIGHT
+from tkinter import ttk, Frame, Label, E, W, LEFT, RIGHT
 import gui.widgets as widgets
 import json
 import os
@@ -19,6 +19,9 @@ def dungeon_page(parent):
     mscbLabel = Label(self.frames["keysanity"], text="Shuffle: ")
     mscbLabel.pack(side=LEFT)
 
+    # Load Dungeon Shuffle option widgets as defined by JSON file
+    # Defns include frame name, widget type, widget options, widget placement attributes
+    # This first set goes in the Keysanity frame
     with open(os.path.join("resources","app","gui","randomize","dungeon","keysanity.json")) as keysanityItems:
         myDict = json.load(keysanityItems)
         dictWidgets = widgets.make_widgets_from_dict(self, myDict, self.frames["keysanity"])
@@ -26,6 +29,7 @@ def dungeon_page(parent):
             self.widgets[key] = dictWidgets[key]
             self.widgets[key].pack(side=LEFT)
 
+    # These get split left & right
     self.frames["widgets"] = Frame(self)
     self.frames["widgets"].pack(anchor=W)
     with open(os.path.join("resources","app","gui","randomize","dungeon","widgets.json")) as dungeonWidgets: