Merge branch 'stable-3.1' into master

* stable-3.1:
  Upgrade bazlets to latest stable-3.1 to build with 3.1.10 API

Change-Id: Ie78eeb60a3438bdd78e307bb0a64094f60a53614

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 2dff5db..c7dbaa5 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "91ea277efd6d9f24c18d6ddeba65bed866b00872",
+    commit = "0f81174e3d1b892a1342ebc75bb4bbb158ae0efe",
     #local_path = "/home/<user>/projects/bazlets",
 )