BTG - update ( only text this time )

Plenty of changes:

• A lot of synergy cards are added to the game
• Bosses drop a legendary weapon that makes them pass 2nd time more bearable.
• Players can build multiple decks and swap between them mid run between the circles
• Shops give more options now: Buy a card; Rent a card (added to your deck for this circle only); Heal; Armor
• Generic encouters are randomised
• Circle 0 - a mandatory tutorial where people get their starting pack, learn the actions, and enemy types.
• Collected Souls are carried over circles but not over runs.
• Complete save system implemented ( if you alt f4 - you can continue from there )