Adds changelog for version 4.9.0

Author: Anmol Vijaywargiya

CHANGELOG.md

@@ -3,6 +3,10 @@
 All notable changes to this project will be documented in this file. This change log follows the conventions
 of [keepachangelog.com](http://keepachangelog.com/).
 
+## 4.9.0
+- Improvises the publishing logic during consumption via subscribers.
+- Upgrades the state management for rabbitmq subscribers.
+
 ## 4.8.0
 - `rabbitmq-retry-count` is now available in `metadata` provided in user handler function.
 

project.clj

@@ -2,7 +2,7 @@
 (cemerick.pomegranate.aether/register-wagon-factory!
   "http" #(org.apache.maven.wagon.providers.http.HttpWagon.))
 
-(defproject tech.gojek/ziggurat "4.8.0"
+(defproject tech.gojek/ziggurat "4.9.0"
   :description "A stream processing framework to build stateless applications on kafka"
   :url "https://github.com/gojektech/ziggurat"
   :license {:name "Apache License, Version 2.0"