Would you care to elaborate? Is there something specific you see in this project that caught your eye? One thing I noticed is the use of ligatures, which is becoming increasingly common as editors embrace Unicode more fully, but that's an editor/presentation feature, not something specific to the language. For example:

  ->  →
  =>  ⇒
  >=  ≥

I've seen an increasing number of people trying out Fira Code, which includes a nice set of such ligatures:

https://github.com/tonsky/FiraCode