It fixes the line endings in the smartsearch/finder plugins
It updates the queries to use the 2.5 version of the database including new fields and field name changes (such as meta data, created_by etc).
It adds position taxa to contacts.
It adds language taxa to all content types (allowing filters based on language, which is a first step to more fully incorporating multlingual content into smart search).
Since all core content must be in categories removes the condition for creation of category taxa.
There is a new pull request