Design and implement the following strategies as additional players:
BuyBestCard: if there is more than one card that the player can buy, it
buys the best card. [2pts]
Rationale: when you can buy two cards, you might as well buy the one
that creates more value.
AlwaysTrade: the player trades up if it can gain two or more pebbles
from a trade. [2pts]
Rationale: the more pebbles you acquire, the sooner you can buy one.
BestAlways: this player combines the two modifications. [2pts]
Rationale: combine the two rationales.
Run a tournament to find out how these strategies perform. [1pts]