added support for pdf files with plus signs in their name

lib.php

@@ -376,7 +376,7 @@ function pdfannotator_pluginfile($course, $cm, $context, $filearea, $args, $forc
     array_shift($args); // Ignore revision - designed to prevent caching problems only.
 
     $fs = get_file_storage();
-    $relativepath = urldecode(implode('/', $args));
+    $relativepath = implode('/', $args);
     $fullpath = rtrim("/$context->id/mod_pdfannotator/$filearea/0/$relativepath", '/');
     do {
         if (!$file = $fs->get_file_by_hash(sha1($fullpath))) {

version.php

@@ -25,7 +25,7 @@
 defined('MOODLE_INTERNAL') || die();
 
 $plugin->component = 'mod_pdfannotator';
-$plugin->version   = 2021102800;
-$plugin->release  = 'PDF Annotator v1.4 release 9';
+$plugin->version   = 2022020800;
+$plugin->release  = 'PDF Annotator v1.4 release 9+';
 $plugin->requires  = 2021051700;
 $plugin->maturity  = MATURITY_STABLE;