Add support for Bazel 0.15
@@ -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("0.13", "0.14")
+check_version("0.13", "0.15")
load("//tools/cpp:clang_configure.bzl", "clang_configure")
