v0.81

Only some small but impactful changes this weekend (with a new chunk or two).

SAD had some special rules reducing the lift it gave compared to other shots. I've removed this because it screws with judging distances. Instead I've reduced the distance SAD can travel. This helps it stay weaker and nerfs shots that spawn secondary SAD shots (which were already overpowered anyway).

A score screen has been added to the end of runs. There's not really a correct way to play, so statistics felt best:

• Pride is your remaining health (minus a small amount for each time you healed).
• Greed is the amount of coins you collected.
• Wrath is the amount of red monsters killed.
• Vigor is the amount of time spent moving.
• Clean is the amount of destructible tiles cleared.