Pop the Corn: Kernel Clicker

Minor content added for Christmas: a new purchasable Pan and a Skybox that will be unlocked for free. Also, during December, the BGM system will play a special festive background track when the game starts! 🎅 ⛄ Happy Popping!

Fixed an issue where the players currency would loop to -$2.147 Billion after reaching $2.147 Billion, this was due to the data type being int, which has an integer limit and will loop back around causing the issue. Changed it to long which supports almost infinite amounts of numbers. Increased the price for the butter and salt upgrade as they are very strong and broke the early gameplay. Increased rainbow popcorn drop chance, and it's multiplied value. Fixed an issue with Salt and Butter Multipliers affecting all purchases and rewards. Added Descriptions to Salt and Butter Upgrades for clarity.