Bump version to v1.4.0
Bump version to v1.4.0

dlorenc/minikube,dlorenc/minikube,kubernetes/minikube,kubernetes/minikube,warmchang/minikube,dlorenc/minikube,dlorenc/minikube,kubernetes/minikube,warmchang/minikube,warmchang/minikube,dlorenc/minikube,dlorenc/minikube,warmchang/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,dlorenc/minikube,dalehamel/minikube,warmchang/minikube,dalehamel/minikube,warmchang/minikube,kubernetes/minikube,dlorenc/minikube,dalehamel/minikube,warmchang/minikube