Slight enhancement to domain_source module to add canonical meta tags to node. Canonical meta tags can improve SEO
The signature verifier script provides a simple way to validate the arguments passed to a function. Most functions sanitize their arguments before proceeding. Often this is via a set of repeated checks ie checking that a required field is not null or that it is the correct data type (array or int for example). If a function requires many arguments then this can result in a lot of code before the function can start it's actual work. The aim of this class is to abstract out as much of this as possible to improve readability and cut down on code duplication.