I installed this extension (via git clone) in August - which as far as tell is the latest version.
First off, it's great - thanks.
The only issue I have is that we only get notifications sometimes. i.e. Sometimes when someone likes my post, there is a notification. Other times there isn't. The likes seem to show up fine on the posts, and you can review them in your profile. There seems to be no pattern, and no error popups or messages in the error log.
(ok, one other issue: I'd like to be able to click on number to know who the like was from, I'm mostly using a phone, so hover doesn't work)