Bump up version

Ryota Yoshikawa · Ryota Yoshikawa · commit 67052867f046 · 2019-06-25T19:04:33.000+09:00
diff --git a/cli/version.go b/cli/version.go
@@ -1,3 +1,3 @@
 package cli
 
-const Version = "0.3.1"
+const Version = "0.4.0"
