v0.6.0

• Add limitation of 6 players per game
• Set the players color when he joins from 6 predefined ones
• Show overlay when there is no internet connection
• Make sure usernames are unique
• Add sign in with google
• Remove active games list & add form to join game by ID
• Add results screen which shows the players place, when they went bankrupt and the game duration
• Only show confetti to the player who won
• Use network time instead of client time