Update version and changelog for hotplug support

ChangeLog.md

@@ -5,6 +5,8 @@ All notable changes to this project will be documented in this file.
 The format is based upon [Keep a Changelog].
 
 ## [Unreleased]
+### Added
+- USB Hotplug support to libx52 and libusbx52
 
 ## [0.2.0] - 2020-04-14
 ### Changed

configure.ac

@@ -4,7 +4,7 @@
 #
 # SPDX-License-Identifier: GPL-2.0-only WITH Classpath-exception-2.0
 
-AC_INIT([x52pro-linux], [0.2.0], [nirenjan@gmail.com])
+AC_INIT([x52pro-linux], [0.2.1], [nirenjan@gmail.com])
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects])
 AC_PROG_CC