Add changelog entry (#1365, #1683)

Author: vy

src/changelog/.2.x.x/1365_open-FileExtension.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to you under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<entry xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns="http://logging.apache.org/log4j/changelog"
+       xsi:schemaLocation="http://logging.apache.org/log4j/changelog https://logging.apache.org/log4j/changelog-0.1.0.xsd"
+       type="changed">
+  <issue id="1365" link="https://github.com/apache/logging-log4j2/issues/1365"/>
+  <issue id="1683" link="https://github.com/apache/logging-log4j2/pull/1683"/>
+  <author id="github:Karthi1711"/>
+  <author id="github:vy"/>
+  <description format="asciidoc">Open `FileExtension` methods to allow their usage in custom ``RolloverStrategy``s</description>
+</entry>