Time to say goodbye (to this repository)

[Reinmar]

It's over 3 years since we created this repository. Our goal was to centralize discussions about CKEditor 5 major architectural decisions and meta-aspects like various naming and code style conventions.

It served us well for the first year, but then was overshadowed by the main CKEditor 5 repository. Its content became outdated and we moved all the discussions to other places.

For the next two years, up until recently, this repository served us as a platform to publish release notes and updates about our plans. However, with time, as the project progressed, this content started to duplicate our blog posts: https://ckeditor.com/blog/?tags=CKEditor-5.

It's time now to clean this up:

• Raw, developers-oriented release notes will be included in the changelog of the main package (which is also available here: https://github.com/ckeditor/ckeditor5/releases).
• As usual, release notes will be followed by more generally targeted blog posts published on the official blog: https://ckeditor.com/blog/.
• The official blog will also be used for other kinds of news and updates.
• All discussions will be moved to https://github.com/ckeditor/ckeditor5.
• The Roadmap ticket will be moved to https://github.com/ckeditor/ckeditor5 as well (I'll post here an update).

Huge thanks to all of you who contributed to CKEditor 5 for the past 3 years ♥️

[szymonkups]