I was able to get this to work.
I used pack200 to create a pack.gz and placed the jar and the pack.gz files in the lib/core/common.
I restarted the gateway and my designer and I was able to run from com.pubnub.api import Logger without any errors.
Thanks to @Kevin.Herron in this post: Adding java custom classes to Ignition
NOTE* his disclaimer about official support and the SDK is the way to go.