Added '.' as a path separator for crawling.

ih/workflow.py

@@ -973,7 +973,7 @@ class ImageLoader:
             d[key]["depth"] = [n for n,x in enumerate(sp) if key in x][0]
             d[key]["split"] = []
             val = sp[d[key]["depth"]]
-            for operator in [" ", "_", "-"]:
+            for operator in [" ", "_", "-", "."]:
                 if operator in val:
                     b = val.split(operator)
                     x = [n for n,x in enumerate(b) if key in x][0]