Leading/trailing trivia Formatting

[belav]

We lose new lines in places we may want them, and insert them in places we probably shouldn't.
We also gain extra new lines at times.

We lose the new line after foo

#define foo

namespace Namespace

We add an extra new line before #pragma each time we format - #21

namespace Namespace
{
#pragma
    public class ClassName { }
}

There are some forms of comments we want inline, something like this breaks I think.

this.DoSomething(1, /* no break */ 2);

[belav]

#32 is related, and maybe can be handled in this issue.