Embeddable Common-Lisp 16.0.0 released

Congratulations! ECL is very mature, and this release seems to further solidify that aspect of the project. We've been using it heavily at our startup with no problems, embedded with c++. I think it's a very well done implementation. If you're thinking of trying ECL out but emacs/slime is too much to have to learn, rlwrap, is a readline wrapper that makes the REPL very friendly. To integrate with c++, the ECL manual [1] is a decent reference.

[1] https://common-lisp.net/project/ecl/manual/

Has anyone used the embedding aspect of ECL significantly? I've used ECL as a standalone Lisp system, and also done fairly trivial embedding where there isn't much more interaction than there would be if you communicated with an external Lisp system via a pipe. But curious how usable the API on the C side is for interacting with an embedded ECL, to call functions and pass data across the boundary in either direction (cl_object, cl_def_c_function, etc.). The documentation for that part seems pretty sparse.

An issue of ECL Quarterly was also published recently including some release coverage: https://common-lisp.net/project/ecl/quarterly/volume2.html.