Add the CHANGELOG entry.
# Changelog
-## 0.15.3-dev
+## 0.16.0-dev
- [#406](https://github.com/tag1consulting/goose/pull/406) make sure that the graphs are built correctly if the load test is interrupted during the starting phase
- [#408](https://github.com/tag1consulting/goose/pull/408) update 'Running the load test' page in the Goose book to show HTML report
+- [#411](https://github.com/tag1consulting/goose/pull/411) **API change**: some public APIs have been made private or removed
+ o `util::MovingAverage` structure and all related functions have been moved to a different namespace and made private
+ o `GooseRequestMetricAggregate::requests_per_second`, `GooseRequestMetricAggregate::errors_per_second` and `GooseRequestMetricAggregate::average_response_time_per_second` have been removed
+ o `GooseTaskMetricAggregate::tasks_per_second` has been removed
+ o `GooseMetrics::users_per_second` has been removed
+ o formerly public methods `report::task_metrics_template()` and `report::errors_template()` have been made private
+ o `report::graph_rps_template()`, `report::graph_eps_template()`, `report::graph_average_response_time_template()`, `report::graph_users_per_second_template()` and `report::graph_tasks_per_second_template()` have been removed
## 0.15.2 December 13, 2021
- [#391](https://github.com/tag1consulting/goose/pull/391) properly sleep for configured `set_wait_time()` walking regularly to exit quickly if the load test ends
