Bug fixes

Patch notes:

• We have removed decimal numbers when showing damage.
• We added a feedback and bug report button to the main menu.
• We improved the button to change language that you couldn't see properly.
• We've added a flash effect when damaging monsters.
• Improved the mini-boss summon animation.
• Hints with the game controls now appear when entering the training area in the portal room.
  
• Changed the color of poison element damage so it doesn't conflict with the healing color.
• Added a bones counter to appear during the gameplay.
• Added SFX when purchasing an upgrade in the portal room.
• Enabled the ability to toggle auto-casting and auto-aim on the portal room.
• We've made a small improvement to the spell autocasting system.
• Fixed bug that let UI buttons to be clicked multiple times without receiving response.
• Changed the minigame entrance to make it easier for players to find them during the demo only.