Changed most if not all die() error statements to exceptions, allowing for better error handling;

Fixes a bug introduced in 1.2.2.1 regarding the exclude_category and category parameters;
Fixes a bug occurring when saving items with no categories it would error on some MySQL database setups;
Fixes a small bug in the instance class constructor preventing the routes to be registered;

Added JQuery MultiSelect Field Definition;
Added JQuery MultiSelect to Categories options;
LISE starts using the namespaces features of PHP 5.3.0;
New exceptions handler: errors and exceptions in LISE can now be localized (check error codes and strings in the Translator Center);
Added FEU SingleSelect Field Definition (deprecates FEU Dropdown);
Added FEU MultiSelect Field Definition;
Added support for arrays in optionvalues;
Added support for admin listing templates

Fixes backlink functionality;
Fixes to the maintenance functions: fixing DB tables imported from LI2 should not issue a PHP Fatal Error in no conditions;
Added route for pagination with category;
Fixes detailpage parameter override on default action;
Fixes exclude_category parameter: now items not belonging to any category don't get excluded;

Fixes to the LISE_LI2converter class. Imported instances should work without errors now;

Added CustomFromUDT field definition: allows to create select/checkboxes/radio fields with multiple selection capability and validation from UDTs ;
Added Category filter to the default action: you can now show summaries of selected categories;
Added the possibility to pass parameters to field templates (for instance to handle summary and detail views differently);
New field definitions: BackendText, FEUDropdown, GalleryDropdown, GBFilePicker (with CMSMS 1.x only), JMFilePicker, LISEInstance, LISEInstanceItem;

#10706 - minor notice;
Better handling of fielddef custom templates;
Fixes to SearchResult;
Fixes to DateTime fielddef mainly related to db storage and sorting;
Added a lise_datetime_utils class to help with format conversions;
CategoryQuery class supports category parameter now;
Improved Tags sorting;
CustomFromUDT: added the possibility to customize Admin Listing presentation via UDT;
Fixes bug #10814 - Assets fail to load if SSL is enabled for Backend. (Thanks hexdj);
Numerous fixes and improvements in fielddefs templates;
Numerous minor bug fixes;
Fixes to routes in CMSMS 2.x(thanks ajprog);
Tags interfering with CMSMS backend menu; fixes regarding aliases; additional work on routes (thanks ajprog);
Fixes to backend instances pagination (BR #10712) (Thanks Jeff Bosch [ajprog] and Greg Prosser [geepers]);
Fixes BR #10904, (thanks Jeff Bosch [ajprog] and Eduardo Martinez [hexdj]);
Fixes to LI2 imports and LISE instance cloner; Updating fixes old imports/clones bugs;

LISE instances can now be set to be upgraded manually or automatically on a per instance setting in conjunction with a global setting on LISE main module;
LISE main module can now be set to be upgraded manually (recommended) to avoid timing out during upgrades;
LISE main module has to be installed manually to avoid timeouts during installation;
Added the capability to define the instance Friendly Name, Module Admin Description and Module Admin Section on the Create Instance form;
Added instance import, export and clone capability;
Implemented FRs #10643 and #10646:
- #10643 - added a Tabs field definition (thanks to Albert Cansado);
- #10646 - made total record count available as a Smarty variable (thanks to Chris Ciavarella [caciavar]);

Fixes to the Tags functionality;
Fixes related with new CMSMS 2.0.1 way of handling variable scopes and template objects;
Some minor fixes;