doc: add changelog (#243)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a947b9b..195602e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,9 +19,32 @@
 
 # Table of Contents
 
+- [0.3.0](#030)
 - [0.2.0](#020)
 - [0.1.0](#010)
 
+# 0.3.0
+
+This release mainly improves the program robustness and adds some features.
+
+## Core
+
+- Support Leader election to let only the leader process resources [#173](https://github.com/apache/apisix-ingress-controller/pull/173);
+- Let Controller itself generates resource ids instead of relying on APISIX [#199](https://github.com/apache/apisix-ingress-controller/pull/199);
+- Change go module name from `github.com/api7/ingress-controller` to `github.com/apache/apisix-ingress-controller` [#220](https://github.com/apache/apisix-ingress-controller/pull/220);
+- Re draw the design diagram [#214](https://github.com/apache/apisix-ingress-controller/pull/214);
+- Support gRPC scheme in ApisixUpstream [#225](https://github.com/apache/apisix-ingress-controller/pull/225);
+- SSL resource cache optimization [#203](https://github.com/apache/apisix-ingress-controller/pull/203);
+
+## Deploy
+
+- Complete the compatibility tests on Amazon EKS, Google Cloud GKE, Ali Cloud ACK and etc [#177](https://github.com/apache/apisix-ingress-controller/pull/177), [#180](https://github.com/apache/apisix-ingress-controller/pull/180), [#183](https://github.com/apache/apisix-ingress-controller/pull/183);
+- Refactor the helm charts, merging ingress-apisix and ingress-apisix-base into apisix-ingress-controller [#213](https://github.com/apache/apisix-ingress-controller/pull/213);
+
+## Test
+
+- Now CI runs e2e test suites in parallel [#172](https://github.com/apache/apisix-ingress-controller/pull/172);
+
 # 0.2.0
 
 This release mainly improve basic features, bugfix and adds test cases.
diff --git a/Makefile b/Makefile
index 17edd13..3d51a7a 100644
--- a/Makefile
+++ b/Makefile
@@ -16,9 +16,9 @@
 #
 default: help
 
-VERSION ?= 0.2.0
+VERSION ?= 0.3.0
 RELEASE_SRC = apache-apisix-ingress-controller-${VERSION}-src
-IMAGE_TAG ?= "dev"
+IMAGE_TAG ?= dev
 
 GINKGO ?= $(shell which ginkgo)
 GITSHA ?= $(shell git rev-parse --short=7 HEAD)