Fix issue: arguments appearing in reverse order
Fix issue: arguments appearing in reverse order

Not a big deal, but it's annoying when you input Xor(a, b, c), and you
see Xor(c, b, a) in the terminal session.

sschnug/pyeda,karissa/pyeda,sschnug/pyeda,cjdrake/pyeda,karissa/pyeda,pombredanne/pyeda,pombredanne/pyeda,GtTmy/pyeda,karissa/pyeda,GtTmy/pyeda,sschnug/pyeda,GtTmy/pyeda,cjdrake/pyeda,cjdrake/pyeda,pombredanne/pyeda