     @showBubble = true
     @underlineIssues = true
 
+    @subscriptions = new CompositeDisposable
     @messages = new Set # Classified snapshot of linter's messages when it was last updated
     @lineMessages = new Set
     @markers = []
     @statusTiles = []
+
     @tabPriority = ['File', 'Project', 'Line']
 
     @tabs =

    @removeMarkers()
    @panelWorkspace.destroy()
    @removeBubble()
    for statusTile in @statusTiles
      statusTile.destroy()



    @panel.id = 'linter-panel'
    @updateTabs()
    @subscriptions.add @linter.onDidClassifyMessages =>
      @render()

  # consumed in views/panel
