Hope you haven't stopped development because the project is still considered as beta?!
First, thank you (and of course all other reviewers) very much for the positive feedback.
The plugin seems to run very stable - back when I published it I just did not wan't to release a stable version without broader testing. Therefore I will do a stable release with the next maintenance release.
I changed my development workflow a bit and compile all Less/Sass files locally and deploy them afterwards. I still use the plugin for some projects though. Depends on need and contributions to add new functionality.
Tabber works really fine - it is well thought and has a very "understandable" Documentation (for me). Perfect Support via eMail and simple Updates via NoNumer Extension manager.
But what i REALLY appreciate is, that you can try ALL NoNmber extensions FREE OF CHARGE without any limitations. And if you are satisfied just buy a license to support his great work ! Keep It on!