Revert "Move setImmediate into requestUpdate; Batch updates"

This reverts commit ad522e6ab1.

src/editor-component.coffee

@@ -177,9 +177,7 @@ EditorComponent = React.createClass
     if @batchingUpdates
       @updateRequested = true
     else
-      @willUpdate ?= setImmediate =>
-        @forceUpdate()
-        @willUpdate = null
+      @forceUpdate()
 
   getRenderedRowRange: ->
     {editor, lineOverdrawMargin} = @props
@@ -528,7 +526,10 @@ EditorComponent = React.createClass
     @cursorsMoved = true
 
   onDecorationChanged: ->
-    @requestUpdate()
+    return if @decorationChangedImmediate?
+    @decorationChangedImmediate = setImmediate =>
+      @requestUpdate()
+      @decorationChangedImmediate = null
 
   selectToMousePositionUntilMouseUp: (event) ->
     {editor} = @props

src/editor.coffee

@@ -1126,8 +1126,7 @@ class Editor extends Model
   #
   # Returns nothing
   addDecorationToBufferRowRange: (startBufferRow, endBufferRow, decoration) ->
-    @batchUpdates =>
-      @displayBuffer.addDecorationToBufferRowRange(startBufferRow, endBufferRow, decoration)
+    @displayBuffer.addDecorationToBufferRowRange(startBufferRow, endBufferRow, decoration)
 
   # Public: Removes a decoration from line numbers in a buffer row range
   #
@@ -1137,8 +1136,7 @@ class Editor extends Model
   #
   # Returns nothing
   removeDecorationFromBufferRowRange: (startBufferRow, endBufferRow, decoration) ->
-    @batchUpdates =>
-      @displayBuffer.removeDecorationFromBufferRowRange(startBufferRow, endBufferRow, decoration)
+    @displayBuffer.removeDecorationFromBufferRowRange(startBufferRow, endBufferRow, decoration)
 
   # Public: Adds a decoration that tracks a {Marker}. When the marker moves,
   # is invalidated, or is destroyed, the decoration will be updated to reflect the marker's state.