Cotonti Siena 0.9.0

#1. What's new in Siena 0.9.0

• Modularization: modules have been separated from the core, dependencies between extensions have been minimized.
• New multi-layer cache subsystem.
• Changes in plugins API: simplified hooks, simplified plugin meta information, easy multihooks.
• Massive code refactoring; all prefix finally changed from sed_ to cot_ and not just that.
• HTML parsing support with HTML filtering. BBcodes are moved to a plugin, disabled by default.
• Natural pagination mode: page numbers instead of database offset.
• Automatic Installation and Upgrade system.
• Built-in AJAX helpers and core AJAX support.
• SEO: dynamic metas, titles, alts for images, title attributes, nofollow links, noindex pages, correct HTTP response codes.
• Improved pagination with cutoms URLs support.
• Contents internationalization plugin for pages, structure, index, tags.
• Category structure is now global for the site and not only for pages. Forums module uses the structure instead of custom table with master/slave sections.
• More elegant error and message triggering and display.
• CoTemplate 2.5 with nested logic blocks, callbacks and advanced template compiler.
• Skins are now called Themes, themes can have Color Schemes.
• JavaScript/CSS consolidation, minification and gzip utility for higher page speed.
• Backwards compatibility layer for Genoa plugins, which allows a subset of the old Cotonti and Seditio plugins to run on Siena.
• New themes: Nemesis for development and new themes based on it; SymiSun-03 to demonstrate how nice it can look.
• All HTML have been removed from PHP scripts, Resource Strings can be used to customize almost any aspect of the output.
• Multiple logins (login from multiple browsers, devices and locations) support and still high protection!
• Admin templates now form separate layout of backend area.
• Private messages have got some Gmail-like features.
• Validation queue displays items in the queue and has more filters.
• Trash plugin has an API and displays items in trash can.
• Password recovery is now a part of users module.
• Improved search plugin.
• Localizations have been modularized too.
• jQuery 1.5, CKEditor 3.5.2, HTML Purifier 4.3.0 and other latest third-party components.
• Comments and Ratings are now plugins.
• Configuration, Authorization and Extension management APIs.
• Form Generation API, File Uploads API, Extrafields API.
• PDO-based database layer.
• Import buffer which prevents data loss if en error occurs when submitting a form.
• Special input functions for dates and pagination.
• ... and a lot more, I can't really list all of them. Most of the changes can be found in this Trac report.