* Implement `links` via optional interfaces
* Updating example app to include links
* Update readme with links information
* Exclude a slice relationship only if the slice is empty AND there are no defined links
* Remove `Link` in favor of vanilla `map[string]interface{}`. More flexible for different allowed links spec implementations.
* Update app.go with correct Links methods
* Use LinksObject and LinkObject types along with type assertion to provide errors when marshaling an invalid links JSON API object.
* Renamed LinksObject Links and LinkObject Link
* Added back the relationship link post merge.
* Renamed the JSON* Linkable functions JSONAPI* such that when a library user implements the interface it is clear the functions are used for JSON API as opposed to JSON
* Example cleanup.
* Refactor the example to use constants from jsonapi and http.
* Add support to nullify relationship; http://jsonapi.org/format/#document-resource-object-linkage
* Fixed: [null] is not valid as an empty relationship.
* add support for 'omitempty' on relationships; default behavior of marshalling empty/nil relations (i.e. w/o 'omitempty' tag) marshals with null data relation
* cleanup whitespace
* Added go 1.7 to test versions; fixed the marshaling of empty relations to return an empty array rather than a null/nil. Added a more robust test case for the marshaling of non omitted relations.
* Cleanup.
* Added a comment to UnmarshalMany
* Document the ‘omitempty’ annotation on a relation.
* Add common JSON API values as exported jsonapi pkg constants.
* Implemented a failing test demonstrating the intended behaviour of the omitempty annotation.
* Updated the failing test to ensure that unset field without the "omitempty" annotation are not inadvertently omitted.
* Working implementation of the "omitempty" annotation for fields that are of any type.
* Update the readme to include a brief description of how to use the `omitempty` in a attr field.
* Update the json example also using a uint for type variety.
Aren Patel
Kyle Truscott
Aren Patel
Sean W. Richardson
Dennis Faust
Sam Woodard