Changelog:

• Bug fix. Error in combined CSS files caused by media type in file being different to type in media attribute on the LINK tag.
• Bug Fix: Lazyloading images with srcset attributes broke W3C HTML validation.
• Big Fix: PHP Notice in profiler.php
• Improvements: Organized settings in fieldsets on Settings page.
• Improvements: Add Image Attributes will ignore images with both height and width attributes present. If one attribute is present the other will be added based on aspect ratio.
• Improvements: Page cache lifetime setting and handling separated from combined files.