why did the development on this stop?

In the Readme it says

> This project does not have any active maintainers. We recommend that you use nteract, a native notebook application

What is the reason for this? I very much like the idea of jupyter notebooks, but the lack of having a fully capable text editor has always annoyed me too much to use it. Now it seems that nteract is recommended, however nteract does not seem to differ too much from a browser based jupyter notebook except it's a desktop application.

There are two possibilities: a) I am not getting something here, and there are ways to use jupyter notebooks in text editors that I haven't found out yet. b) people are generally not so much depending on the tools and editing comfort of proper editors as I am.

I think a) is unlikely, I have googled around quite a bit, but I wish I would be wrong and somebody points me to an answer. I think b) is also unlikely, if I look at the deep complexity of emacs for example, people really seem to love their editors. Now what is happening in the field of python data analysis? Do people not care about editors there? Also unlikely.

I want to make the point, that a package promising the functionality as I can read it in this Readme (I have never used it, I started using atom at a point where it was already deprecated) can not be replaced by nteract, surely not by the current version of it. If nteracts plan is to grow to a full fledged text editor, wouldn't it be easier to try to implement notebook support into an existing one with a huge userbase? So what are the reasons for this development to stop, and start something (in my eyes) very different?
thanks for clarifications