* [#840] Nacos server adds startup mode to distinguish between config and naming.
* [#762] Register instance returns failed when the health check mode is 'server' in standalone mode.
* [#473] Nacos Cluster Mode kubernate Startup nacos.log error Log.
* [#240] Log strong dependence problem.
* [#824] getServicesOfServer throws exception if service list is empty.
* [#802] Nacos server multi-boot mode support.
* [#800] Nacos's client-to-server addressing mode document introduction.
* [#768] The interval at which the heartbeat is sent in BeatReactor is not controlled by the server return value.
* [#759] why instance can't auto-delete.
* [#756] Format of instance and service should be validated.
* [#720] Memory leak in PushService.
* [#653] IoUtils under nacos-common-0.2.1-RC1.jar lacks "" judgment on encoding.
* [#588] Client compatible to jdk1.6. On branch develop
