Hide problem alert on code change

app/schemas/subscriptions/tome.coffee

@@ -123,9 +123,10 @@ module.exports =
 
   'tome:winnability-updated': c.object {title: 'Winnability Updated', description: 'When we think we can now win (or can no longer win), we may want to emphasize the submit button versus the run button (or vice versa), so this fires when we get new goal states (even preloaded goal states) suggesting success or failure change.', required: ['winnable']},
     winnable: {type: 'boolean'}
-    
+
+  # Problem Alert
   'tome:show-problem-alert': c.object {title: 'Show Problem Alert', description: 'A problem alert needs to be shown.', required: ['problem']},
     problem: {type: 'object'}
     lineOffsetPx: {type: ['number', 'undefined']}
-
+  'tome:hide-problem-alert': c.object {title: 'Hide Problem Alert'}
   'tome:jiggle-problem-alert': c.object {title: 'Jiggle Problem Alert'}

app/views/play/level/tome/ProblemAlertView.coffee

@@ -9,6 +9,7 @@ module.exports = class ProblemAlertView extends CocoView
 
   subscriptions:
     'tome:show-problem-alert': 'onShowProblemAlert'
+    'tome:hide-problem-alert': 'onHideProblemAlert'
     'tome:jiggle-problem-alert': 'onJiggleProblemAlert'
     'tome:manual-cast': 'onHideProblemAlert'
     'real-time-multiplayer:manual-cast': 'onHideProblemAlert'

app/views/play/level/tome/SpellView.coffee

@@ -379,6 +379,9 @@ module.exports = class SpellView extends CocoView
       @ace.setOptions minLines: lines, maxLines: lines
       $('#spell-palette-view').css('top', 175 + lineHeight * lines)  # Move spell palette up, slightly overlapping us.
 
+  hideProblemAlert: ->
+    Backbone.Mediator.publish 'tome:hide-problem-alert', {}
+
   onManualCast: (e) ->
     cast = @$el.parent().length
     @recompile cast, e.realTime
@@ -438,6 +441,7 @@ module.exports = class SpellView extends CocoView
       _.throttle @notifyEditingBegan, 250
       _.throttle @notifySpellChanged, 300
       _.throttle @updateLines, 500
+      _.throttle @hideProblemAlert, 500
     ]
     onSignificantChange.push _.debounce @checkRequiredCode, 1500 if requiredCodePerLevel[@options.level.get('slug')]
     @onCodeChangeMetaHandler = =>