Update changelog.

Author: denravonska

Diff for: CHANGELOG.md

@@ -4,6 +4,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [3.5.9.4] - 2017-07-16
+### Changed
+ - Added checkpoint (block 950000).
+
+### Fixed
+ - Fix neural network missing folder error.
+ - Fix speech bug.
+
 ## [3.5.9.3] - 2017-07-15
 ### Changed
  - Require superblocks to be populated with more than half of the