Bump version to 0.4-1

Change-Id: Iba383f294fa420e928788c360b79330f670e9d09

version.bzl

diff --git a/version.bzl b/version.bzl
index c5200a7..3c1285c 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 = "0.4"
+GITILES_VERSION = "0.4-1"