I consider Serapeum to be a revamp of the Common Lisp standard: https://github.com/ruricolist/serapeum/blob/master/REFERENCE.md https://github.com/ruricolist/se

I consider Serapeum to be a revamp of the Common Lisp standard: https://github.com/ruricolist/serapeum/blob/master/REFERENCE.md https://github.com/ruricolist/serapeum/blob/master/REFERENCE.... This provides a bunch of new features and idioms including ideas borrowed from newer languages like Clojure. Great example of "growing a language" as a long-term evolutionary process that doesn't require changing earlier specifications in incompatible ways.