Existing Neato Robot ROS Package Will Need Some Updating

Unsurprisingly, there already exists a neato_robot
ROS package for Neato. Equally unsurprisingly, it was maintained up to ROS Hydro and since abandoned. ROS releases are named alphabetically, meaning this code is three releases behind my installation of ROS Kinetic and a whopping five releases behind the current state of the art ROS Melodic.
But hey, it's all open source, if I want to get it to function all I need to do is roll up my sleeves and get to work. Since it's out of date, I think it'd be a bad idea to grab the pre built package. Instead I followed links to its source code repository (last updated October 2014) and cloned it into my local catkin workspace.
And continuing on the trend of not being surprised, this code did not work immediately. Publishing events to /cmd_vel
topic did not elicit robot chassis movement, and subscribing to /odom
or /base_scan
received no data. Fortunately this node was written in Python, which I hope would be easier to debug than a ROS node written in C++. But either way, it's time to dig in and figure out what it is doing and how that differs from what it is supposed to be doing.