[0.12] Play with no delay

[h2]Features[/h2]

• Servers are always ready to play, enjoy!
  
• Testing migration scenarios.
  

[h2]Improvements[/h2]

• Latency has less effect on body inertia.
  

[h2]Fixes[/h2]

• The spectator always finds a target.
  
• Correct survival time calculating.
  
• ...