add menu item to copy tag in DICOM Dump utility
cloned datasets do not have correct internal transfer sytnax (@mdubey82)
better handling of improperly encoded private sequences
update changelog
clip overlay to image region
clip input values to output lut
clip overlay to image region
fix overlay origin
correct calculation of embedded overlay dimensions
add ability to get value from child items
accessor methods for numeric content items
Merge remote-tracking branch 'upstream/master'