V1.5 Progression update part 1

Made it easier and smoother to progress.

I have made pets give 5 coins when fed

Made it so there is a chance to give 15 coins when pet

Made you gain 1 coin every 15 seconds

Added a day counter to count how long your pets have been alive

Fixed the game breaking bug again.

Made it so buying pets increases the price by 25% each time.