Release 1.8.9.4

Additions

• Stack block (slabs/stairs) is a block property now
• Ability to measure ping with /ping
• Can configure IRC settings (command prefix, controller rank) from Gui
• Can disable afk/unafk showing on IRC

Improvements:

• lb/gb info shows block tint colour
• /help map motd details the special rules (-hax, +respawn, etc)

Fixes:

• Having 30-35 bots causing 10-20% CPU usage on mono
• Opchat/Adminchat showing to IRC
• uPnP not working at all
• Console not showing timestap for commands
• Players not being sent to spawn base in CTF
• /bots not working from console
• /me showing up on IRC when level has level-only chat
• Various commands still sending globally when level-only chat
• CTF writing broken config
• random/cloudy brush showing 'only admin+ can draw with unknown'
• No message being shown when specifiying an invalid block in commands
• Upgrading old lockdown erroring
• Being able to send opchat messages with no contents