feature: format && on new line

[sergey-safarov]

I prefer to use an expression format like

if a == 1
    && b == 2
    && c == 3
{
}

In this case, the new checks added do not trigger the whole string to be overwritable.
Could you make this behavior configurable?

Current behavior.
gofmt reformat expression to

if a == 1 && b == 2 && c == 3
{
}