Fixed demo party not clearing the party before adding itself, fixed Pokémon icon renamer/mover not moving shiny Pokémon icons properly, added GameData#Something#keys method

Data/Scripts/010_Data/001_GameData.rb

@@ -46,6 +46,12 @@ module GameData
       return (self::DATA.has_key?(other)) ? self::DATA[other] : nil
     end
 
+    # Returns the array of keys for the data.
+    # @return [Array]
+    def keys
+      return self::DATA.keys
+    end
+
     # Yields all data in order of their id_number.
     def each
       keys = self::DATA.keys.sort { |a, b| self::DATA[a].id_number <=> self::DATA[b].id_number }
@@ -102,6 +108,12 @@ module GameData
       return (self::DATA.has_key?(other)) ? self::DATA[other] : nil
     end
 
+    # Returns the array of keys for the data.
+    # @return [Array]
+    def keys
+      return self::DATA.keys
+    end
+
     # Yields all data in alphabetical order.
     def each
       keys = self::DATA.keys.sort { |a, b| self::DATA[a].real_name <=> self::DATA[b].real_name }
@@ -153,6 +165,12 @@ module GameData
       return (self::DATA.has_key?(other)) ? self::DATA[other] : nil
     end
 
+    # Returns the array of keys for the data.
+    # @return [Array]
+    def keys
+      return self::DATA.keys
+    end
+
     # Yields all data in numberical order.
     def each
       keys = self::DATA.keys.sort