New creates a new Weight instance.

Equal is the result of a comparison between two values when the first value is equal to the second value.

Heavier is the result of a comparison between two values when the first value is heavier than the second value.

Lighter is the result of a comparison between two values when the first value is lighter than the second value.

Value represents an immutable multi-tiered weight value, which is used to determine the order of spenders.

Weight represents a mutable multi-tiered weight value that can be updated in-place.

Comparison is the result of a comparison between two values.