Heat: Heavy Rain expansion

This expansion introduces:

• One new driver w/ all essential player specific components in orange (now allows up to 7 racers)
• Two new maps (Japan & Mexico)
• New upgrade cards (introducing the purple drop - a different cooldown that allows the player to take a heat card from their discard pile and place it back into their engine)
• Submerged track sections (must spend an extra heat for down shifting gears in these sections)
• More heat, stress, championship, sponsorship, and event cards.