Add support for Bazel 0.13.0
Test Plan: `bz clean --expunge && bz test //...  //kythe/release:release_test`
Reviewers: #core_team, zarko
Subscribers: #core_team
@@ -4,7 +4,7 @@ load("//:version.bzl", "check_version")
# Check that the user has a version between our minimum supported version of
# Bazel and our maximum supported version of Bazel.
-check_version("0.9.0", "0.12.0")
+check_version("0.9.0", "0.13.0")
load("//tools/cpp:clang_configure.bzl", "clang_configure")
