Feature Request: add N2 gas

[Firestar-Reimu]

Now heating LN2 will make it disappear, it is good to add N2 gas

and NH3, NO2, HNO3 etc. can be made

[IEATDIRTWASNTAVAILABLE]

This would break a lot of saves. Perhaps something like OLN2 (Old LN2) could be added that doesn't evaporate. but something like this has been recommended a lot of times and it hasn't ever been implemented.
I can find about 5 forum posts that directly suggest gaseous nitrogen (some of which from 2012 and 2013) and it still isn't in the game. I doubt it will ever be in the game
I would suggest reading how to suggest an element