Updated artwork, 'grand mystery' and 'superb mystery' buffed — Heat Death Steam update #1828994

In this patch, I've added around 30 new artworks for cards, mostly focusing on the human planet. I've reduced the energy cost of the upgrades 'grand mystery' and 'superb mystery', because I think these cards still have relatively few synergies that are strong enough to justify the high energy cost. 'Grand mystery' will now also have the 'exhaust' keyword. There are a few synergies that are extremely strong, though, so I might reevaluate this later. Other miscellaneous changes: - The card 'Fix' is renamed to 'Grow'. - The borders on all cards are now thinner, and their glittery background is slightly darker - 'Malfunction' cards have a dimmer border For future updates, updating the card artwork will be my main focus.