CHANGELOG: document git_filter_init and GIT_FILTER_INIT
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1b9e0c9..24ecba4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -96,6 +96,9 @@
 * `git_transport_smart_proxy_options()' enables you to get the proxy options for
   smart transports.
 
+* The `GIT_FILTER_INIT` macro and the `git_filter_init` function are provided
+  to initialize a `git_filter` structure.
+
 ### Breaking API changes
 
 * `clone_checkout_strategy` has been removed from