fileio/odmlparser error when loading JSON or YAML

[mpsonntag]

When loading a JSON odML file via fileio.py the following error occurs:

 odml.load('f.json', 'json')
 ... odmlparser.py#246 : AttributeError: 'str' object has no attribute 'close'

When loading a YAML odML file via fileio.py the following error occurs:

odml.load('f.yaml', 'yaml')
... odmlparser.py#236 : AttributeError: 'str' object has no attribute 'close'