Here’s the handler for the new Zooz zen23 toggle switch, version 2. The new version allows it to work with your existing standard 3-way switch, like the other version 2 zooz switches. They are also including a neutral wire, which is very convenient.
One note - the inclusion and exclusion don’t actually require you to toggle all the way up and down. To include you just push up 3 times, to exclude, you push down 3 times.
Note: Link has been changed since original post
Note2: Link has been changed since the updated post