you could rebase your repo to upstream (that's what I do now), and as Vogtinator said, push "small" changes to upstream directly but major one to yours, then with a PR to upstream, for review etc.

Works for me with gcc 4.9, though it crashed clang now ("internal backend error" on linking emu.o)

yep
Also see my edit above.
(and valid for also any other functions you may use often I didn't read all obviously)

Oh nice

I have to admit that for a game, since it's mostly going to be played on the actual calculator device, relative/scaling coordinates are less important than on utilities and educational stuff, though (which teachers could use, and they tend to do it on the computer software)

... and on TI-Planet so that you got it covered on all the major sites

Anyway, looks nice, even though I don't know the original game

I dont understand why Nspire is so slow.
It has like 64 mb memory and 100mb space. YET it manages to be slower than other TI calculators

A real argument about speed isn't about memory/space. It would rather be that it has an ARM9 clocked at 133 MHz and still manages to have so much overhead in the end that a "Disp i" in a for loop from 0 to 100 takes a crapload of time (which keeps getting worse every OS, weirdly enough). Fortunately in general is "good enough" for math/science stuff, and well, there is Lua for other things.
Also yeah, lol, as Vogtinator said, for several releases now they have debugging enabled (just fire up nspire_emu, you'll see), which is ridiculous for production builds. (but makes rev-eng easier for those who work on that - I still don't understand how that's something they haven't caught. Or maybe devs just want to see third-party dev more easily done... )

Seriously TI if you want people to use AND enjoy the product, dont just focus on security.

That's the community/enthusiast's perspective.
But because the Nspire series has been much more designed for a use on classroom, the target is now more oriented on teachers and school [boards]. Guess what they want ? Security.
Which is just not compatible with freedom as long as it's not done smartly enough to make everyone happy.

I have had one and now i use ti 84+ even though nspire is there for me. And i am actually thinking of getting a Prime and get rid of TI forever

HP is absolutely no threat to TI, they are way too "late" in the market share race, and I'm assuming their budget is also way lower (have you ever seen other events as TI's annual T3 international conference, from HP or Casio ?)

Except for the basic who got a bit slower for Disps (at least that's where I think the issue comes from) and the Lua that got faster on some graphical operations (cf the comparison video), there isn't much ... (area between curves + grid selection on the graph app, margin fixed on the calculator (available on 3.6 with a program from levak), and some visual changes on D&S).
Plus anti-downgrade, of course, yeah.

What have you found that is going faster now, btw ?
(Also, which calc do you have exactly, and with which hardware revision ? (last character of the serial number, on the back))