- Deleted maps.xml

- Added methods to lock/unlock on map locations:

$ pytfall.maps.unlock("pytfall_ms", "general_store")
$ pytfall.maps.lock("pytfall_ms", "general_store")

Dev mode will notify if there is no such location or throw an Error if there is no such map.

Fix  #65

game/library/classes - support.rpy

@@ -373,7 +373,19 @@ init -9 python:
 
         def __call__(self, map):
             return getattr(self, map)
-
-
-    class OnScreenMapCell(_object):
-        pass
+
+        def unlock(self, map, loc):
+            for l in self(map):
+                if l["id"] == loc:
+                    l["hidden"] = False
+                    break
+            else:
+                notify("Could not find location: {} in map: {} to unlock.".format(map, loc))
+
+        def lock(self, map, loc):
+            for l in self(map):
+                if l["id"] == loc:
+                    l["hidden"] = True
+                    break
+            else:
+                notify("Could not find location: {} in map: {} to lock.".format(map, loc))