Update CHANGELOG.md

Author: rileykarson

CHANGELOG.md

@@ -13,6 +13,7 @@ FEATURES:
 IMPROVEMENTS:
 * compute: Add import support for `google_compute_subnetwork` ([#227](https://github.com/terraform-providers/terraform-provider-google/issues/227))
 * compute: Add support for `auto_healing_policies` to `google_compute_instance_group_manager` [GH-249]
+* compute: Add support for `ip_version` to `google_compute_global_forwarding_rule` [GH-265]
 * container: Add support for node pool autoscaling [GH-157]
 * container: Add NodeConfig support on `google_container_node_pool` [GH-184]
 * container: Add support for legacyAbac to `google_container_cluster` [GH-261]