Bump version to 0.3-7

Change-Id: I162f34ffd9e4cefafc7bce77e26162fb822182f2

version.bzl

diff --git a/version.bzl b/version.bzl
index 2094755..7ac9881 100644
--- a/version.bzl
+++ b/version.bzl
@@ -4,4 +4,4 @@
 # we currently have no stable releases, we use the "build number" scheme
 # described at:
 # https://www.mojohaus.org/versions-maven-plugin/version-rules.html
-GITILES_VERSION = "0.3-6"
+GITILES_VERSION = "0.3-7"