Bump plugin version to 0.4
diff --git a/VERSION b/VERSION
index 3cf3ca0..33b4391 100644
--- a/VERSION
+++ b/VERSION
@@ -1,4 +1,4 @@
 # Used by BUCK to include "Implementation-Version" in plugin Manifest.
 # If this file doesn't exist the output of 'git describe' is used
 # instead.
-PLUGIN_VERSION = '0.2'
+PLUGIN_VERSION = '0.4'