Module add

Traits for the addition OptionOperations.

Traits

• OptionAdd
  Trait for values and Options addition.
• OptionAddAssign
  Trait for values and Options addition assignment.
• OptionCheckedAdd
  Trait for values and Options checked addition.
• OptionOverflowingAdd
  Trait for values and Options overflowing addition.
• OptionSaturatingAdd
  Trait for values and Options saturating addition.
• OptionWrappingAdd
  Trait for values and Options wrapping addition.