update version number

VipsPlugin.php

@@ -91,9 +91,9 @@ class VipsPlugin extends _VipsPlugin implements StandardPlugin, SystemPlugin, Pr
 
         if (match_route('dispatch.php/*/courseware')) {
             PageLayout::addHeadElement('script', [], 'var VIPS_BASE_URL = "' . dirname($this->url_for('sheets')) . '";');
-            PageLayout::addStylesheet($this->getPluginURL() . '/css/vips.css?v=1.8.7');
-            PageLayout::addScript($this->getPluginURL() . '/js/vips.js?v=1.8.7');
-            PageLayout::addScript($this->getPluginURL() . '/js/test-block.js?v=1.8.7');
+            PageLayout::addStylesheet($this->getPluginURL() . '/css/vips.css?v=1.8');
+            PageLayout::addScript($this->getPluginURL() . '/js/vips.js?v=1.8');
+            PageLayout::addScript($this->getPluginURL() . '/js/test-block.js?v=1.8');
         }
 
         // set up translation domain
@@ -362,8 +362,8 @@ class VipsPlugin extends _VipsPlugin implements StandardPlugin, SystemPlugin, Pr
         }
 
         PageLayout::addHeadElement('script', [], 'var VIPS_BASE_URL = "' . dirname($this->url_for('sheets')) . '";');
-        PageLayout::addStylesheet($this->getPluginURL() . '/css/vips.css?v=1.8.7');
-        PageLayout::addScript($this->getPluginURL() . '/js/vips.js?v=1.8.7');
+        PageLayout::addStylesheet($this->getPluginURL() . '/css/vips.css?v=1.8');
+        PageLayout::addScript($this->getPluginURL() . '/js/vips.js?v=1.8');
         PageLayout::setTitle($header_line . ' - ' . $this->getPluginName());
 
         Sidebar::get()->setImage('sidebar/checkbox-sidebar');

plugin.manifest

 pluginclassname=VipsPlugin
 pluginname=Vips
 origin=virtUOS
-version=1.8.7
+version=1.8.8
 studipMinVersion=4.0
 studipMaxVersion=5.2.99
 icon=images/vips_black.svg