george/prediction_tracker: Manage and score predictions on arbitrary topics. @ 718c0f9d85438321a6dbbeeb48d6673186ca26a9

George C. Privon c7a036e748 math library not needed for expt/log		преди 6 години
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create_database.rkt	3b8fae716c don't force entry of prediction text every time, since prediction has unique ID	преди 6 години
scoring_rules.rkt	c7a036e748 math library not needed for expt/log	преди 6 години
update_predictions.rkt	d1b625a549 add logarithmic scoring rule, update filename to reflect variety	преди 6 години