Add VT26 style shuffling of dungeon items

Also adds new VT26 algorithm type that uses this, and makes it the default.
the new type also includes the GT junk items randomization.

Main.py

@@ -3,7 +3,7 @@ from Regions import create_regions
 from EntranceShuffle import link_entrances
 from Rom import patch_rom, LocalRom, JsonRom
 from Rules import set_rules
-from Dungeons import create_dungeons, fill_dungeons
+from Dungeons import create_dungeons, fill_dungeons, fill_dungeons_restrictive
 from Items import ItemFactory
 from collections import OrderedDict
 import random
@@ -56,7 +56,10 @@ def main(args, seed=None):
 
     logger.info('Placing Dungeon Items.')
 
-    fill_dungeons(world)
+    if args.algorithm == 'vt26':
+        fill_dungeons_restrictive(world)
+    else:
+        fill_dungeons(world)
 
     logger.info('Fill the world.')
 
@@ -70,6 +73,8 @@ def main(args, seed=None):
         distribute_items_staleness(world)
     elif args.algorithm == 'vt25':
         distribute_items_restrictive(world, 0)
+    elif args.algorithm == 'vt26':
+        distribute_items_restrictive(world, random.randint(0, 15))
 
     logger.info('Calculating playthrough.')