Fixed

• #114: Do not call getAttributes() twice. (@f3ath)

Added

• #96: Improve invalid parameter exceptions with more information about what's invalid. (@nubs)

Changed

• #106: Convert snake_case into camelCase when calling a relationship method. (@ustrugany)

Fixed

• #94: Properly support empty to-one relationships.
• #99: Omit attributes on resource identifier objects. (@anthonyhendrickson)
• #103: Prevent resource relationships from being built twice per resource.
• #110: Omit empty attributes on resources. (@f3ath)

Added

• #79, #81: Allow serializers to add links and metadata to resources. (@bwaidelich)

Changed

• #62: Allow PHPUnit 5.0. (@vinkla)
• #85: Allow creation of relationships without data. (@josephmcdermott)

Fixed

• #65: Convert kebab-case into camelCase when calling a relationship method. (@avoelpel)
• #70: Include related resources even if relationship is not listed in sparse fieldset. (@Damith88)
• #72: Return null in Parameters::getLimit if no limit is set. (@byCedric)
• 46142e5: Prevent primary "data" resources from showing up again in the "included" array. (@tobscure)

Fixed

• Improve performance when working with large numbers of resources

Completely rewrite to improve all the things.

• Resources and Collections now contain data and are responsible for serializing it when they are converted to JSON-API output (whereas before serializers were responsible for creating concrete Resources/Collections containing pre-serialized data). Serializers are now only responsible for building attributes and relationships. This is a much more logical/testable workflow, and it makes some really cool syntax possible!
• Support for sparse fieldsets.
• Simplified relationship handling.
• Renamed Criteria to Parameters, add validation.
• Added ErrorHandler for serializing exceptions as JSON-API error documents.
• Updated docs.
• Wrote some tests.
• It should go without saying that this is not at all backwards-compatible with 0.1.

Changed

• Rename abstract serializer

• Initial release