Fixed warning: ivar 'symbolicTraits' which backs the property is not referenced in this property's accessor [-Wunused-property-ivar]
Fixed warning: method parameter with no explicit ownership [-Wexplicit-ownership-type]
Fixed warning: auto property synthesis is synthesizing property not explicitly synthesized [-Wobjc-missing-property-synthesis]
Removed unused code.
Merge pull request #769 from jcbertin/develop

Fixed warning: ivar 'symbolicTraits' which backs the property is not ref...