Please, I implore you, don't claim it to be open source. Call it "a very permissive licence", or "source available", but don't claim to be open source unless you actually are.

I love the release, I appreciate the time and effort, and I'm sure you have the best intentions, but the term "open source" has a very well defined meaning for very well defined reasons, and those reasons are hugely important to the last few decades of technological development. Please don't break the definition, even if you have the best of intentions!

Once again, thanks and congratulations on the release!