1.3.1b

• Added WEBO Nimblizer (image optimization tool).
• Cancelled PHP4 back compatibility.
• Added CSS Minify option.
• Added unobtrusive support for Affiz ads, Google Translate widget.
• Separated unobtrusive widgets configuration.
• Added option to exclude GET params from URL hash on caching.
• Improved server environment detection.
• Improved HTML caching.
• Minor fixes.

1.3.0

• Improved HTML caching (especially for Joomla! 1.5x).
• Added unobtrusive support for Unruly Media, GoViral Network, Exoclick, Carpediem, and new OpenX format.
• Improved files merging.
• Added support for RackSpaceCloud CDN.
• Added 'nosprites' magic word.
• Reformed product structure (less files).
• Improved configuration wizard.
• Improved chained optimization.
• Added rollback to custom version (1.2.0+).
• Minor fixes.