Merge branch 'stable-2.16' into stable-3.0

* stable-2.16:
  Switch required bazel version to 0.29.1

Change-Id: I5f9dc73497dc2a14f1a762ee995097ab43870133

.bazelversion

diff --git a/.bazelversion b/.bazelversion
index 8862dba..25939d3 100644
--- a/.bazelversion
+++ b/.bazelversion
@@ -1 +1 @@
-1.0.0rc2
+0.29.1