Add PaneView::getModel()

spec/pane-view-spec.coffee

@@ -29,7 +29,7 @@ describe "PaneView", ->
 
     runs ->
       pane = container.getRoot()
-      paneModel = pane.model
+      paneModel = pane.getModel()
       paneModel.addItems([view1, editor1, view2, editor2])
 
   afterEach ->
@@ -259,7 +259,7 @@ describe "PaneView", ->
   describe "when a pane is split", ->
     it "builds the appropriate pane-row and pane-column views", ->
       pane1 = pane
-      pane1Model = pane.model
+      pane1Model = pane.getModel()
       pane.activateItem(editor1)
 
       pane2Model = pane1Model.splitRight(items: [pane1Model.copyActiveItem()])

src/pane-view.coffee

@@ -84,6 +84,9 @@ class PaneView extends View
       @model.destroy()
     @command 'pane:close-other-items', => @destroyInactiveItems()
 
+  # Essential: Returns the {Pane} model underlying this pane view
+  getModel: -> @model
+
   # Deprecated: Use ::destroyItem
   removeItem: (item) ->
     deprecate("Use PaneView::destroyItem instead")