Merge pull request #80 from brancz/cut-0.4.0

CHANGELOG: add changelog entry for v0.4.0 release

Author: brancz

CHANGELOG.md

@@ -1,3 +1,14 @@
+## v0.4.0 / 2017-02-07
+
+* [FEATURE] Add replicaset metrics
+* [FEATURE] Add resourcequota metrics
+* [FEATURE] Add daemonset metrics
+* [FEATURE] Add resource limit and request metrics for pod containers
+* [FEATURE] Add node name label to `kube_pod_info` metric
+* [FEATURE] Add rolling update metrics for deployments
+* [ENHANCEMENT] Allow disabling collectors
+* [ENHANCEMENT] Improve in cluster vs non in cluster configuration
+
 ## v0.3.0 / 2016-10-18
 
 * [FEATURE] Add pod metrics: `kube_pod_status_scheduled`, `kube_pod_container_requested_cpu_cores` and `kube_pod_container_requested_memory_bytes`