update 1.0.8.0

Commits for version update

vendor/maatwebsite/excel/docs/import/chunk.md

@@ -0,0 +1,49 @@
+# Chunk importer
+
+When dealing with big files, it's better to import the data in big chunks. You can enable this with `filter('chunk')`;
+To import it into chunks you can use `chunk($size, $callback)` instead of the normal `get()`. The first parameter is the size of the chunk. The second parameter is a closure which will return the results.
+
+    Excel::filter('chunk')->load('file.csv')->chunk(250, function($results)
+    {
+            foreach($results as $row)
+            {
+                // do stuff
+            }
+    });
+
+## ExcelFile class example:
+
+When working with ExcelFile injections (in the constructor or as method injection), you can enable the chunk filter inside the ExcelFile class
+
+    class UserListImport extends \Maatwebsite\Excel\Files\ExcelFile {
+
+        public function getFile()
+        {
+            return 'file.csv';
+        }
+
+        public function getFilters()
+        {
+            return [
+                'chunk'
+            ];
+        }
+
+    }
+
+Injected ExcelFile example:
+
+    public function importUserList(UserListImport $import)
+    {
+        $import->chunk(250, function($results)
+        {
+            // do stuff
+            // or return true if you want to stop importing.
+        });
+    }
+
+## Queued chunks
+
+We automatically queue every chunk for you, if you have enabled the queue driver in your config. 
+
+If you want to by-pass the behaviour, you can pass `false` as third param of `chunk($size, $callback, $shouldQueue)`.