To be clear, I mostly dislike the design that sessions are stored somewhere deeply in `.config` about which users don't know and which is quite fragile. To be honest, I suggested the very same thing here
https://github.com/geany/geany/pull/450#issuecomment-87497461
but had 6 years to realize it was a bad idea ;-). (No, frankly, basically I abandoned #450 because I realized this isn't a good match for Geany.)
If it turns out turns out that splitting projects/sessions has some big benefits (and I don't see that myself now), I would much rather see `project.geany`, `session.conf` side by side in the same directory. I'm not super-thrilled about having one more file to care about but I could live with that.