add 0.4.0 to changelog
add 0.4.0 to changelog

ContainerSolutions/microservices-infrastructure,chrislovecnm/microservices-infrastructure,ContainerSolutions/microservices-infrastructure,sehqlr/mantl,bitium/mantl,huodon/microservices-infrastructure,CiscoCloud/mantl,sehqlr/mantl,datascienceinc/mantl,bitium/mantl,chrislovecnm/microservices-infrastructure,KaGeN101/mantl,CiscoCloud/microservices-infrastructure,CiscoCloud/mantl,phnmnl/mantl,abn/microservices-infrastructure,KaGeN101/mantl,mantl/mantl,chrislovecnm/microservices-infrastructure,huodon/microservices-infrastructure,abn/microservices-infrastructure,phnmnl/mantl,datascienceinc/mantl,chrislovecnm/microservices-infrastructure,CiscoCloud/microservices-infrastructure,abn/microservices-infrastructure,huodon/microservices-infrastructure,mantl/mantl,chrislovecnm/microservices-infrastructure,huodon/microservices-infrastructure,huodon/microservices-infrastructure