v1.5.0

• Providing only a drop argument to lowest() or highest() will now keep all other elements rather than just the first non-dropped element.
• depth argument to Die.reroll() is now mandatory.
• tuple outcomes are now auto-tupleized again during Die construction.
• Add Die.stochastic_round() method.
• Add Die.reroll_to_pool() method.
• Add Die.keep() method. This works as MultisetGenerator.keep() with an implicit sum.
• Add percent option to Population.probability.
• Add new again_count mode for handling Again, which limits the total number of dice.
• Improved ability to keep from both ends for certain types of multiset expressions.
• Rename func parameters to function.
• MultisetExpression.order() is now public.
• Improved sorting for Symbols; now compares counts in alphabetical order.
• Experimental sort_match, maximum_match_highest, maximum_match_lowest expressions. sort_match replaces the compair evaluations.
• Experimental all_straights_reduce_counts and argsort multiset evaluations.
• Breaking change: nearest, quantity, quantities, probability, probabilities, keep_counts no longer have separate variants for each comparison; instead, they now take a comparison argument. quantities and probabilities now accept a comparison argument but no longer accept a list of outcomes.