Bump std++.

8d1b4d4c · Robbert Krebbers · 861ee760 · 8d1b4d4c
Commit 8d1b4d4c authored Dec 10, 2017 by Robbert Krebbers
--- a/opam
+++ b/opam
@@ -12,5 +12,5 @@ remove: ["rm" "-rf" "%{lib}%/coq/user-contrib/iris"]
 depends: [
  "coq" { (>= "8.6.1" & < "8.8~") | (= "dev") }
  "coq-mathcomp-ssreflect" { (>= "1.6.1" & < "1.7~") | (= "dev") }
-  "coq-stdpp" { (= "dev.2017-12-04.1") | (= "dev") }
+  "coq-stdpp" { (= "dev.2017-12-08.0") | (= "dev") }
 ]