What I have for installation instructions is in README.md - I have not written it up nicely. I didn't even think about there being a README not just README.md (Shimniok didn't modify it either, as you can see). I'll update the READMEs to write out the installation process. I don't think I'm very good at documenting things, in general; Nobody seems to understand what I write for documentation (this has been a long-standing sore-point with me - I've rewritten the installation instructions for my AI (AzzyAI, for an old MMO) so many times, but 90+% of support inquiries are about how to extract a zip file and put the contents into a folder, so clearly I don't know how to explain that to people)
Edit - I've updated the READMEs
I don't intend to maintain support for the other parts - I expect they'll work, but I haven't changed anything about them, and there are plenty of cores for them, none of which are any worse, and some of which may be better. That's my feeling on that. I think the tinyx4/x5 can even be supported on 1.6.0 without a custom core. So yeah - I intend to support only the 841/441. I may try to merge in the 1634 core (rambo's - however he reorganized the files, so the merge is more difficult), since the two chips very similar, and both really awesome.
Am I missing something regarding 1.0.6 vs 1.6? Both are fully supported.
As I understand it, now that I've made those trivial changes, 1.0.6 and 1.6.0 should both work without issue; I agree that 1.6.0 is a better choice, since you don't have to update the toolchain. I mean, after you update the toolchain on 1.0.6, you get an identical binary to what you get out of 1.6 (in my tests).
I think all that's needed is a note to clarify the need for putting everything in an "avr" folder on 1.6.0, but not doing that on 1.0.6 right? (right next to the explanation about how you need to update the toolchain if using 1.0.6, but not 1.6.0)
I'm going to see if I can get Optiboot working on this tonight or tomorrow. Having a hardware UART makes optiboot a lot more attractive. I think it can be crammed into 9 64-byte erase pages, so you'd have like 7.4k of flash left with optiboot, which isn't bad at all, and being able to program over serial, then pop over to the monitor is mighty convenient.