turn off multiprocessing if debug

dungeonsheets/make_sheets.py

@@ -583,7 +583,10 @@ def main():
         filenames = [f for f in os.listdir('.') if os.path.splitext(f)[1] == '.py']
     else:
         filenames = [args.filename]
-
+    if args.debug:
+        for filename in filenames:
+            _build(filename, args)
+    else:
         with Pool(cpu_count()) as p:
             p.starmap(_build, product(filenames, [args]))