Clasp Is v1.0.0
github.com> Clasp is a new Common Lisp implementation that seamlessly interoperates with C++ libraries and programs using LLVM for compilation to native code
I was about to say that saying X is v1.0 seems like clickbait if it's not a known thing. Then I realized that it's Common Lisp with 2k stars (which seems like a lot in relative terms).
Especially since being a v1 (rather than v2) the README (or release notes) seems to be a better link.
[0] https://github.com/clasp-developers/clasp/blob/1.0.0/README....