Refactor readers for better di (#457)

* Refactor readers to get a proper DI

Similar to what was done with writers, readers also needed to be updated to match the new way of doing things.
This commits promotes a better DI (factories, injection through constructors).

* Escapers should not be singletons

Instead, they should be proper object that can be injected where needed.

src/Spout/Writer/Common/Manager/WorkbookManagerAbstract.php

@@ -3,6 +3,7 @@
 namespace Box\Spout\Writer\Common\Manager;
 
 use Box\Spout\Common\Exception\IOException;
+use Box\Spout\Common\Manager\OptionsManagerInterface;
 use Box\Spout\Writer\Common\Helper\FileSystemWithRootFolderHelperInterface;
 use Box\Spout\Writer\Common\Entity\Options;
 use Box\Spout\Writer\Common\Manager\Style\StyleManagerInterface;
@@ -312,4 +313,4 @@ abstract class WorkbookManagerAbstract implements WorkbookManagerInterface
         $rootFolder = $this->fileSystemHelper->getRootFolder();
         $this->fileSystemHelper->deleteFolderRecursively($rootFolder);
     }
-}
+}