update CHANGELOG and bump to v0.4.0

this closes #38

Author: mrtazz

CHANGELOG.md

@@ -1,6 +1,24 @@
 # Changelog
 
-## v0.4.0 (???)
+## v0.4.0 (2nd February 2016)
+
+### Features
+**This is a major backwards-incompatible API refactor please read carefully**
+
+- split out into a simple and an advanced API
+  - simple API via static methods
+  - advanced usage via a connection object
+- support for custom user agent strings
+- support for connection pooling and keep-alive
+- support for following redirects
+- support for getting request metrics from the Connection object
+
+### Improvements and fixes
+- increased test coverage
+- addition of valgrind and lint runs on CI
+- fixed some memory leaks
+- improved documentation coverage
+
 
 ## v0.3.0 (10th January 2016)
 

Makefile.am

@@ -12,7 +12,7 @@ test_program_CPPFLAGS=-Iinclude -Ivendor/gtest-1.7.0/include -Ivendor/jsoncpp-0.
 lib_LTLIBRARIES=librestclient-cpp.la
 librestclient_cpp_la_SOURCES=source/restclient.cc source/connection.cc source/helpers.cc
 librestclient_cpp_la_CXXFLAGS=-fPIC
-librestclient_cpp_la_LDFLAGS=-version-info 1:0:1
+librestclient_cpp_la_LDFLAGS=-version-info 2:1:1
 
 dist_doc_DATA = README.md
 

configure.ac

@@ -1,5 +1,5 @@
 AC_PREREQ([2.52])
-AC_INIT([restclient-cpp], [0.3.0], [[email protected]])
+AC_INIT([restclient-cpp], [0.4.0], [[email protected]])
 AM_INIT_AUTOMAKE([foreign subdir-objects])
 LT_INIT
 AC_CONFIG_HEADERS([config.h])