message: Added the empty dictionary item in the CHANGELOG
diff: @@ -2,6 +2,7 @@ Tantivy 0.12.0
  ======================
  - Removing static dispatch in tokenizers for simplicity. (#762)
  - Added backward iteration for `TermDictionary` stream. (@halvorboe)
  +- Fixed a performance issue when searching for the posting lists of a missing term (@audunhalland)
  ## How to update?
  