Doom Explorer updated, version 1.37:

• added support for new ZDaemon v1.10 features:
  • new gamemode Duel (old deathmatch with 2 players is now denoted as 1-on-1)
  • support new demo format
  • added new dmflags
• added support for https links in the WadURL server parameter (W shortcut)
• fixed bug with initial addition of ports
• fixed bug with start port in StartServer

List of changes is here
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