Version 2.1

• Improved code editor
• Real-time judge result pushing
• Other minor fixes

Version 2.0

• Updated caching solution
• Upgrade .NET Core to 3.0 GA
• Add ability to disable language config by default
• Detailed rating for problem and contest
• Other fixes

Version 2.0 RC 2

• Add tech stack instrcution
• Use UserName instead of Id for statistics query
• Filter empty lines in extraFiles
• Loose output limit from 64 to 256
• Other fixes

Version 2.0 RC 1

• Multiple files submission
• Improved Judge

Version 2.0 Preview 9

• Add Preloader
• File caching in JudgeHost
• Rank computing fixes
• Result type computing fixes
• Order in data list view
• Fix result always be Accepted bug
• Fix issues with time-zone

Version 2.0 preview 8

• Fix bugs in judge module
• Add initial home page design
• Update rank algorithm
• Other fixes

Version 2.0 preview 7

• Fix memory leakage in problem data processing
• Fix wrong status of problem when not logged in
• New result filter in statistics page

Version 2.0 preview 6

This version contains minor fixes and enhancements.

Version 2.0 preview 5

Totally rewrite H::Judge
Distributed design

Version 1.7 beta

It has been verified internally, but it is non-production ready.
Take your own risk.