Bump the version number to 0.6.0.
Bump the version number to 0.6.0.

Changes since 0.5.6:
- new directory structure for source code.
- rename vtkDICOMSorter to vtkDICOMFileSorter.
- update the DICOM dictionary to 2014c.
- update private dictionaries.
- add GBK and GB2312 Chinese character sets.
- improve query functionality in the parser and directory scanner.
- add support for FloatPixelData and DoubleFloatPixelData.
- improve dicomfind, modeled after the UNIX find command.
- new dicomtocsv utility to dump metadata into a spreadsheet.
- add dicomdump options to control which attributes to dump.

hendradarwin/vtk-dicom,hendradarwin/vtk-dicom,hendradarwin/vtk-dicom,dgobbi/vtk-dicom,dgobbi/vtk-dicom,dgobbi/vtk-dicom