Can't use edition engraver to place \time and \tempo

[caagr98]

I'd expect the two scores created by this to be identical, but the 
second one only has the \key applied (other stuff such as \bar and <>^"" 
works too), not the \time or \tempo. What am I doing wrong?

Also, it seems only the fourth argument is used for selecting editions 
(with \editionID); what's the first argument for?

```
\version "2.19.63"
\include "edition-engraver/edition-engraver.ily"

\consistToContexts #edition-engraver Score.Staff.Voice
\addEdition time
\editionMod time 1 0/0 E.Staff \key g \major
\editionMod time 1 0/0 E.Score \time 4/4
\editionMod time 1 0/0 E.Score \tempo "Some text" 4=120
\editionMod time 2 0/0 E.Score \time 2/4
\editionMod time 3 0/0 E.Score \time 4/4

\book {
  \score { \new Staff <<
    { b'1 2 1 }
    { \key g \major \time 4/4 \tempo "Some text" 4=120 s1 \time 2/4 s2 
\time 4/4 s1}
  >> }
  \score {
    \new Staff { b'1 2 1 }
    \layout {
      \context {
        \Score
        \editionID E
      }
    }
  }
}
```