Rename subscription.destroy to subscription.cancel

spec/app/editor-spec.coffee

@@ -515,7 +515,7 @@ describe "Editor", ->
         rootView.height(200)
         rootView.width(200)
 
-        config.update("editor.fontSize", 10)
+        config.update("editor.fontSize", fontSize)
         lineHeightBefore = editor.lineHeight
         charWidthBefore = editor.charWidth
         editor.setCursorScreenPosition [5, 6]
@@ -1559,6 +1559,7 @@ describe "Editor", ->
         expect(editor.renderedLines.find('.line').text()).toBe "•a line with tabs▸ and spaces•¬"
 
         config.update("editor.showInvisibles", false)
+        config.update()
         expect(editor.renderedLines.find('.line').text()).toBe " a line with tabs  and spaces "
 
       it "displays newlines(¬) as their own token outside of the other tokens scope", ->

src/app/config.coffee

@@ -65,7 +65,7 @@ class Config
       unless newValue == value
         value = newValue
         callback(value)
-    subscription = { destroy: => @off 'update', updateCallback  }
+    subscription = { cancel: => @off 'update', updateCallback  }
     @on 'update', updateCallback
     callback(value)
     subscription

src/stdlib/space-pen-extensions.coffee

@@ -10,14 +10,14 @@ _.extend View.prototype,
 
   subscribe: (eventEmitter, eventName, callback) ->
     eventEmitter.on eventName, callback
-    @addSubscription(destroy: -> eventEmitter.off eventName, callback)
+    @addSubscription(cancel: -> eventEmitter.off eventName, callback)
 
   addSubscription: (subscription) ->
     @subscriptions ?= []
     @subscriptions.push(subscription)
 
   unsubscribe: ->
-    subscription.destroy() for subscription in @subscriptions ? []
+    subscription.cancel() for subscription in @subscriptions ? []
 
   remove: (args...) ->
     @unsubscribe()