Fixes, improvements and new stuff

It's been a while but I've been doing updates with small tweaks and improvements, as well as new features:

New stuff

• Mines: some Mines may have a chest containing Iron Ore, Lumber and other goods
• Windmills may have chests containing edible goods (Mushrooms, herbs, meat, etc.)
• Added an Assassin's Ring, which cloaks its user and increases their overall stats by 10%
  • Obtained by merging 3 Shadow Rings by an Alchemist
• New Snake boss - watch out for its tail!
• Friendly squads now appear on the minimap
• Wheat fields - they are useless but look kinda pretty
• Units can be blinded by the setting or rising Sun's light - use at your advantage when attacking!
• New Unit: the Hunter
• Ranged unit - shoots slowly but increases damage if hitting a unit of the same type (Combo bonus)

Fixes and improvements

• UI sounds pass
• Celebrations VFX when units level up or join the squad
• Inventory is sorted alphabetically, with the Gold Coins on top
• Crystal defender squads difficulty increased based on how many Crystals the player has collected
• Dying and reloading the browser now respawn with a minimal 3-member squad
• Camera zooms out based on the player's squad spread; it is also smoother
• Castles, villages and other landmarks spawn on top of a dirt patch