Changes from BibDesk:
Changes from BibDesk:

Copy the PDFSelection in an attempt to fix exceptions when providing pboard data.

Fix document copying from the context menu, which was always providing the page instead.
WoLpH/skim,ycaihua/skim-app,ycaihua/skim-app,ycaihua/skim-app,WoLpH/skim,WoLpH/skim,WoLpH/skim,WoLpH/skim,ycaihua/skim-app,ycaihua/skim-app