Merge remote branch 'upstream/master'

chunk.py

@@ -547,7 +547,7 @@ class ChunkRenderer(object):
                 ):
                     continue
             elif cave and (
-                    y == 15 and x == 0
+                    y == 15 and x == 0 and z != 127
             ):
                 # If it's on the facing edge, only render if what's
                 # above it is transparent

world.py

@@ -232,7 +232,7 @@ class WorldRenderer(object):
         all_chunks = []
 
         for dirpath, dirnames, filenames in os.walk(self.worlddir):
-            if not dirnames and filenames:
+            if not dirnames and filenames and "DIM-1" not in dirpath:
                 for f in filenames:
                     if f.startswith("c.") and f.endswith(".dat"):
                         p = f.split(".")