(powerset)+lisp program for finding power sets

Working on it right now, just a copyright and documentation so far.

powerset.lisp

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+;;; powerset.lisp --- A program to find the power set of some set
+
+;; Copyright (C) 2021  Aryadev Chavali
+
+;; Author: Aryadev Chavali <aryadev@aryadevchavali.com>
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;; This program provides a naive counting based approach to finding
+;; specifically sized subsets of some set then using that to generate
+;; the power set.  We start by looking for subsets of size n.
+
+;;; Code: