I bought it years ago as a tribute to my childhood and have just held on to it. It was going to be a blog but I have never really found the time for that.
Tested it out. Using spreadsheet terms, it seems that when you want to select A1 to A2 it will scroll unless you have already started a horizontal select. The whole workflow is actually really nice and smooth. I personally like it. I would recommend others to try it out.
Don't see a license anywhere. All I can see is, "the code is available for download and reuse with an open license on Github.", on the main page. Would be nice to know... Maybe it is just me.