Licensing changes started with [2d29a8f](https://github.com/openca/libpki/commit/2d29a8fbfce03a692f3ae7ae75e5ee8daf78e943) made LibPKI [nonfree](https://www.gnu.org/philosophy/free-sw.en.html#run-the-program) and [not even open source](https://opensource.org/osd#persons-or-groups), which it claims to be in [`COPYING`](https://github.com/openca/libpki/blob/master/COPYING#L2). For rationale please read "[Why programs must not limit the freedom to run them](https://www.gnu.org/philosophy/programs-must-not-limit-freedom-to-run.html)."