Ok, that's a big one (that's what she said... :)
- Refactored so that threadi can be used optionally (should go in separate module Aoe_SearchperienceThreadi)
- Refactored indexer to use Magento EE 1.13's indexing infrastructure using changelog tables (using catalogsearch_fulltext_cl)
- Implemented document deletion for document that are no longer found (they lukily will be caputered in the changelog aswell)
- Optimized indexer
- Code cleanup
- Removed obsolute code (Aoe_Searchperience_Model_Indexer_Indexer + cron job)
- added module dependencies