update some out-of-date comments and documentation #176
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#174 had me reading through the code again.
I noticed that in a few places, comments and documentation have gotten out of sync with the source code. This PR revises a couple of comments and removes one obsolete readme file.
Also, a heads up: when building the tests on Ubuntu 24.04 with g++ 13.2, I got a spurious warning that I think is due to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109561. I built with clang++ instead (after installing libc++-dev) to work around it.
Happy 2025 🎉