add a changelog

CHANGELOG.md

@@ -0,0 +1,14 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+## [3.1.2] - 2019-06-06
+### Added
+- ws connect has a -x option to disable per message deflate
+- Add WebSocket::disablePerMessageDeflate() option.
+
+## [3.0.0] - 2019-06-xx
+### Changed
+- TLS, aka SSL works on Windows (websocket and http clients)
+- ws command line tool build on Windows
+- Async API for HttpClient
+- HttpClient API changed to use shared_ptr for response and request

DOCKER_VERSION

@@ -1 +1 @@
-3.1.1
+3.1.2