Added missing serializer for booleans
Fixed error display for temporal-extent
Comments on setup.py (message_extractors)
Reviewed nose tests (to/from XML tests are temporarily disabled)
The value serializers are now only invoked on non-nulls.
Renamed {ckan/inspire} to {ckan/inspire}_metadata at schemata/types
Added {to/from}_xml methods to IObject interface.
Update INSPIRE tests and fixtures
Cherry pick from 7bf62bc5c94e2637f89269d2b335a537112bd289 (INSPIRE fixtures)
Fixed file modes for XML samples
Added `dictize_errors` as an option to validate
Added `dictize_errors` as an option to validate
Added `to_xsd` method to IObject interface
Minor modifications at base, cleanup unused libraries
Implemented basic serializers (as adapters)
Fixed #33
Fixed #33
Fixed #33
Merge branch '23-serializer' (implemented #23)
Merge with master