Update CHANGELOG for 1.8.0 release

Author: daniestevez

CHANGELOG.md

@@ -5,8 +5,15 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [1.8.0] - 2019-10-04
 ### Added
 - Światowid image decoder
+- Support for Taurus-1
+- CCSDS blocks from SOCIS
+
+### Fixed
+- KISS and HDLC blocks from gr-kiss in some flowgraphs
 
 ## [1.7.0] - 2019-08-31
 ### Added