Update release notes
Update release notes

martijnhoekstra/kafka-net,PKRoma/kafka-net,bridgewell/kafka-net,CenturyLinkCloud/kafka-net,geffzhang/kafka-net,EranOfer/KafkaNetClient,BDeus/KafkaNetClient,nightkid1027/kafka-net,gigya/KafkaNetClient,Jroland/kafka-net