[proposal] close file on io.lines("filename", "*a")()

["Soni \"They/Them\" L." <fakedme@...>]

since lua doesn't have refcounting and some ppl wanna do basically 
io.open(file):read("*a") I wanna propose io.lines("filename", "*a")() 
(or alternatively io.lines("filename", "*a", "*l")) should close the 
file as if the iterator ran out.


in other words if the first value isn't nil then check if the last value 
is nil or the last argument is "*a" and if it is then close the file.