Version 0.4 (17 October 2015)

• #8 Remove Workflow::addValueConverter() and Workflow::addValueFilter()
  and handle value filters and converter by ::addConverter() and ::addFilter().
• #9 Allowing processing of multiple readers.

Version 0.3.1 (15 May 2015)

• MappingConverter allows to copy instead of move values
• Conditional converters can now define the field the filter should be applied on

Version 0.3 (28 April 2015)

• Refactored Workflow
• Improved adding of filters, converters and writers
• Allow callback to be passed directly to filters and converters
• Improved MappingConverter

Version 0.2 (21 April 2015)

• Add value converters and value filters
• Add MappingConverter
• Add LogConverter
• Filter items if converter returns null

Version 0.1 (18 March 2015)

• Initial release