Added attribute based validation support. This bridges the gap to the missing DataAnnotations namespace for Universal Windows Apps. ValidatableBase supports custom attributes with custom validation rules.
ValidatableBase no longer implements INotifyPropertyChanged. This was done to conform more to MVVM. ValidatableBase now raises a ValidationChanged event that can be subscribed to by View Models.
Improved overall performance and some bug-fixes.
Namespace changes. Scionwest namespace changed to Sullinger.
Merge branch 'master' of https://github.com/scionwest/ValidatableBase.git