DicomDirectory class should not be disposable
move DicomDirectoryReaderObserver to Dicom.Media
fix menu bug in DICOM Dump utility when changing syntax to JPEG Lossless
ability to browse multiframe images in DICOM Dump utility
basic structured reports
Merge remote-tracking branch 'upstream/master'

Conflicts:
	ChangeLog.md
Merge branch 'master' into portable

Conflicts:
	ChangeLog.md
Added structured report classes to Store project