Version 0.66 - Backfixes, chest upgrades

Version 0.66 - Backfixes, chest upgrades

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• Added the ability to upgrade the chests! Upgraded chests will start opening silver cards immediately.

• You can now keep artifact progress in the forge when restarting the guild (for crystals). We will soon add artifact saving at every 3rd level.

• Tweaked the balance of some guilds.

• Bugfixes!

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