Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  dev-contributing: Update buildifier version to 0.29.0

Change-Id: I85951c31418d26f3c6850d9ca321428c92357435
diff --git a/Documentation/dev-contributing.txt b/Documentation/dev-contributing.txt
index 499267e..1bb6cb5 100644
--- a/Documentation/dev-contributing.txt
+++ b/Documentation/dev-contributing.txt
@@ -171,7 +171,7 @@
 link:https://github.com/google/google-java-format[`google-java-format`]
 tool (version 1.7), and to format Bazel BUILD, WORKSPACE and .bzl files the
 link:https://github.com/bazelbuild/buildtools/tree/master/buildifier[`buildifier`]
-tool (version 0.28.0).
+tool (version 0.29.0).
 These tools automatically apply format according to the style guides; this
 streamlines code review by reducing the need for time-consuming, tedious,
 and contentious discussions about trivial issues like whitespace.