Suggestion to add the Specification pattern to the list of Behavioral Pattern #117
Description
Since the other repositories seem to be implementations specific and I'm not aware of any other means of feature suggestion I'm putting this in here.
Feature
Would like to request the Specification pattern that is mentioned in the book "Domain Driven Design - Tackling Complexity in the Heart of Software" by Eric Evans is added to the list of Behavioral Patterns.
It's a very useful pattern for abstracting conditionals into a reusable format across domains, as well as providing a clean interface for most of not all conditionals, without having to alter the underlying subject.