That was Drafts 5 script. It wouldn’t work with that script on Drafts 4 as it is a rather substantial update to Drafts 5 and you can find many resources online that will guide you through the differences. I’d recommend checking out @agiletortoise’s own Drafts web site getdrafts.com and, whlst it is some months out of date and many things have in fact moved on, @nahumck’s extensive review on Macstories.
I still have Editorial and style use it for bits and pieces, but Drafts 5 is under active development and is incredibly flexible. It is very much my daily driver for working with text outside of my work.
In my opinion, comparing Editorial to Drafts 4 is a false experience in terms of evaluating “Drafts”. Drafts 5 is the here and now. It is free to download, and you can get Pro feature access for just a month for a couple of pounds. My recommendation would be to grab the app, take a month of Pro and try it out that way. Afterwards you would still have Drafts 5 (which can coexist with Drafts 4 by the way) and could still take advantage of a great number of the features without being on the Pro subscription … but with it, you can bend Drafts to your will in so many ways
FYI check out the pro features at: