Version 1.7.2

Changes:

• updated login process
• updated options panel
• updated bot behaviour
• updated popup text
• updated game name
• updated default room settings
• added simulation prediction culling
• added more decals to various maps
• added "player scored" popup text
• added particles "burst" when player knocked out
• added player round stats (e.g. points scored, players knocked out, ...)
• added ball trail particles
• improved spawn behaviour (not always playing off against the same player on the other team)
• various bugfixes