Aside from legitimate gripes about a recycled name, there's a lot of undue negativity in this thread.
Not one person cares that HN-LISPER is not impressed that OP wrote yet-another-Lisp-interpreter-in-language-X or that you're unhappy with the style of their parentheses. Save it.
As "easy" an exercise as it may be, I will guarantee you that OP learned a lot about Lisp, the host language, its build infrastructure, etc. The project is currently unlicensed (you should think about licensing it, OP!), but the source is available for others to study and learn from, too.
So, I say bravo!
I've been studying various Lisps as a hobby. I've been around a long time and I've never seen a community so touchy about something as having Lisp in the name and not being quite a Lisp. The scorn is real. newLisp has been called a garbage lisp for example that no one in their right mind would use.
tldr; Go ahead and use S-Expression syntax but don't put "lisp" in the name. Rich Hickey knew this when he made Clojure.
Almost everybody has their own lisp implementation. Some programmers' dogs and cats probably have their own lisp implementations as well. This is great, but too often I see people omit some of the obscure but critical features that make lisp uniquely wonderful. These include read macros like #. and backreferences, gensyms, and properly escaped symbol names. If you're going to waste everybody's time with yet another lisp, at least do it right damnit.