There are no important fixes in this version, so it's not necessary to upgrade from 3.4 (unless you need any of the changes):
- Now compatible with custom permalink structures having I18N's %parents% placeholder for multilevel URLs (*)
- Duplicate tags (if any) are removed when saving a post
- Slovak language completed (@bokor.pavol)
(*) It should work if the news page is top- or second-level, but not deeper.