shift click buy and sell settings mix #384

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Please add the option to set everything to sell with a shift click. When buy, only 64 items can be bought with the shift click.

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Add 2 new config option:

ALL/BUY/SELL SHIFT_ALLOWS_EVERYTHING: "SELL"

ALL/BUY/SELL SHIFT_ALLOWS_IN_STACKS: "BUY"