Update changelog.md

changelog.md

@@ -7,6 +7,7 @@ Notice: All 1.7.x changes are present in 2.0.x aswell
 - migration/queryInterface.addIndex() no longer fals on reserved keywords like 'from'
 - migration/queryInterface.addIndex() no longer fals on reserved keywords like 'from'
 - bulkCreate now supports a `ignoreDuplicates` option for MySQL, SQLite and MariaDB that will use `INSERT IGNORE`
 - bulkCreate now supports a `ignoreDuplicates` option for MySQL, SQLite and MariaDB that will use `INSERT IGNORE`
 - fixes regression bug with 1:M self associations
 - fixes regression bug with 1:M self associations
+- significant performance improvements for 1:1 and single primary key includes for 500+ rows [#1333](https://github.com/sequelize/sequelize/pull/1333)
 
 
 #### Backwards compatability changes
 #### Backwards compatability changes
 - find/findAll will now always return primary keys regardless of `attributes` settings. (Motivation was to fix various issues with eager loading)
 - find/findAll will now always return primary keys regardless of `attributes` settings. (Motivation was to fix various issues with eager loading)