動きが多少変わっていました

fs.watchの動き(windows 10, node 5.1.1)
  dir/ 監視(event, name)
  ↓
    /tmp.txt 作成
      event = rename, name = tmp.txt
      event = change, name = tmp.txt #発火しなくなった
    ↓
    /tmp.txt 編集
      event = change, name = tmp.txt
      event = change, name = tmp.txt
    ↓
    /tmp.txt 名前変更 -> tmp2.txt
    event = rename, name = null
    event = rename, name = tmp2.txt
    event = change, name = tmp2.txt #発火しなくなった
    ↓
    /dir2/ 作成
      event = rename, name = dir2
    ↓
    /dir2/ -> /dir3/
      event = rename, name = null
      event = rename, name = dir3
    ↓
    /dir2/test3.txt 作成
      event = change, name = dir2
    ↓
    /dir2/test3.txt 編集
      #イベント発火せず
    ↓
    /dir2/test3.txt -> test4.txt
      event = change, name = dir2
      #dir名変更も同様
    ↓
    /dir2/dir3/*
      #何をしてもイベント発火せず

  fs.watchの動き (windows 7で確認です・・)
    dir/ 監視(event, name)
    ↓
      /tmp.txt 作成
        event = rename, name = tmp.txt
        event = change, name = tmp.txt
      ↓
      /tmp.txt 編集
        event = change, name = tmp.txt
        event = change, name = tmp.txt
      ↓
      /tmp.txt 名前変更 -> tmp2.txt
        event = rename, name = null
        event = rename, name = tmp2.txt
        event = change, name = tmp2.txt
      ↓
      /dir2/ 作成
        event = rename, name = dir2
      ↓
      /dir2/ -> /dir3/
        event = rename, name = null
        event = rename, name = dir3
      ↓
      /dir2/test3.txt 作成
        event = change, name = dir2
      ↓
      /dir2/test3.txt 編集
        #イベント発火せず
      ↓
      /dir2/test3.txt -> test4.txt
        event = change, name = dir2
        #dir名変更も同様
      ↓
      /dir2/dir3/*
        #何をしてもイベント発火せず