New Feature
[#1658] Refactor WorkerServer: Using Netty as tcp framework between master and worker, remove zk as task queue, add three choices(Random, RoundRobin, and linear weighted based on cpu and memory) when master choose worker, worker don‘t operate database
[#2584] Support k8s deployment
[#404] Resource center supports directory management
[#1469] Support ambari plugin installation
[#205] Support condition detection type task
[#203] Data synchronization task type, add sqoop support
[#790] Data synchronization task type, add datax support
[#233] Procss definition supports copying, exporting, and importing
[#2501] Add batch export and import workflows feature
[#1460] Improve CI/CD
[#1376] Simplify the deployment, simplify configuration file
BUG FIX
[#3085] after zoom or drag the dag view, cant plcae node correctly and may be disappear
[#3111] Edit the node, after clicking Cancel, the node information is saved
[#3084]remove some standard notice from our NOTICE
[#3032]fix alert.json and metainfo.xml bugs
[#3031]readme.md adds instructions for changing environment variables
[#3058]The task running order in the process instance does not follow the topological order in the process definition
[#3038] remove Conflicting configuration sudo and user
[#3013] fix single resource manager will NPE
[#2728] fix MySQL autoDeserialize bug