update changelog

Author: tkostuch

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add url module - @gibkigonzo (#3942)
 - The `response_format` query parameter to the `/api/catalog` endpoint. Currently there is just one additional format supported: `response_format=compact`. When used, the response format got optimized by: a) remapping the results, removing the `_source` from the `hits.hits`; b) compressing the JSON fields names according to the `config.products.fieldsToCompact`; c) removing the JSON fields from the `product.configurable_children` when their values === parent product values; overall response size reduced over -70% - @pkarw
 - The support for `SearchQuery` instead of the ElasticSearch DSL as for the input to `/api/catalog` - using `storefront-query-builder` package - @pkarw - https://github.com/DivanteLtd/vue-storefront/issues/2167
+- Create attribute service that allows to fetch attributes with specific options - used for products aggregates - @gibkigonzo (https://github.com/DivanteLtd/vue-storefront/pull/4001, https://github.com/DivanteLtd/mage2vuestorefront/pull/99)
 
 ## [1.11.0] - 2019.12.20