[Pharo-dev] Trait-Based Collections?

What ever happened to the work described in [these slides](https://www.slideshare.net/slideshow/bloc-5306443/5306443#1 "these slides") as “BLOC: A Trait-Based Collections Library”? It seemed super cool, both from the perspective of cleaning and beautifying the existing implementation, and also the possibility of composing new collection-like objects with the exact behavior needed (e.g. no more \`ArrayedCollection>>#add:\` shouldNotImplement hacks…