Since @Ebs hasn’t visited meta since March (as of this writing), I’m guessing that he might no longer have interest in maintaining this plugin, though it would be nice to have a notice of deprecation if so.
I suspect that someone else might have to make a maintained fork for us to continue to have our national flags show, and otherwise we’ll just have to quit using this one. 
One of the things not present in Upcoming post stream changes - How to prepare themes and plugins is how to find the plugin outlets to use to replace decorateWidget. It’s probably not a big change, but as a backend developer I didn’t find the instructions sufficient to fix it easily myself. (I am not the target audience! This does not imply a fault in the instructions.)