[gegl] median-blur: add reference hash

[Øyvind Kolås <ok src gnome org>]

commit 0704297a4ca717c1c4e07f685d220e7a9ce91e12
Author: Øyvind Kolås <pippin gimp org>
Date:   Sat Nov 11 21:54:22 2017 +0100

    median-blur: add reference hash

 operations/workshop/median-blur.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/operations/workshop/median-blur.c b/operations/workshop/median-blur.c
index 1590797..0bf41a0 100644
--- a/operations/workshop/median-blur.c
+++ b/operations/workshop/median-blur.c
@@ -629,6 +629,7 @@ gegl_op_class_init (GeglOpClass *klass)
     "name",        "gegl:median-blur",
     "title",       _("Median Blur"),
     "categories",  "blur",
+    "reference-hash", "bd34e0f3b290d67713d6ab79492d9f1e",
     "description", _("Blur resulting from computing the median "
                      "color in the neighborhood of each pixel."),
     NULL);