Fancy Toasts | Better Advancements

Bug fixes:

• Memory leak due to lack of unsubscribing from events (it didn't really affect the game, though. But could've beeb problematic in the long run)
• FTBQuests compatibility:
  • Quest not being rendered if there are multiple icons
  • Custom textures causes just empty icon frame (now by default there is a fallback as a Quest Book for icon)

Adjustments:

• Updated Simplified Chinese language by Gao Xinyang (zh_cn)
• FTBQuests compatibility:
  • There is now 3-minute window between repeatable quests, so they don't spam the screen
• Default positions for different anchors (suggested by Redls07)
• Inverted y position (50 is now -50), because it just makes more sense
• New config version system (for easier migrating in the future, so configs don't reset to default when updated version)