[gegl] exposure: add reference hash

[Øyvind Kolås <ok src gnome org>]

commit f162be8b4f641df6685a878080b50b38bb4c39b4
Author: Øyvind Kolås <pippin gimp org>
Date:   Sat Nov 11 21:32:02 2017 +0100

    exposure: add reference hash

 operations/common/exposure.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/operations/common/exposure.c b/operations/common/exposure.c
index 010281b..114c937 100644
--- a/operations/common/exposure.c
+++ b/operations/common/exposure.c
@@ -457,6 +457,7 @@ gegl_op_class_init (GeglOpClass *klass)
     "name",        "gegl:exposure",
     "title",       _("Exposure"),
     "categories",  "color",
+    "reference-hash", "967bd5777363d1fec59f04889f358a99",
     "reference-chain", "load path=images/standard-input.png exposure exposure=1.5",
     "description", _("Changes Exposure of an image, allows stepping HDR and photographs up/down in stops. "),
     "op-version",  "1:0",