Lack of blanks makes source look confusing

[leonardoalt]

constructor of LValue
interface constructor()

creates
	uint x := 0
	uint y := 2

invariants
	y == 2

behaviour f of LValue
interface f()

storage
	x => 0y => 2

This works all the way to prove, but x => 0y => 2 itself looks a bit confusing to me.
Maybe we should force separators?