Output changed to a bit stranger ! a = 3\na from just 3

Hi guys,

I just updated HVM3 after a month (I was a bit afraid of backwards compatibility problems, but it's awesome).

It's really not important, just an observation:

the output for a program

@main = 3

changed to

! a = 3
a

from just 3

It's strange because I haven't created any variable, but as I said it's very minor issue