Postscript previewer now runs in background. Added dialog for editing item properties. Help display uses a pointer cursor. Allow keyboard shortcuts for scrolling around help window. Make item copying preserve todo status.
Item cloning now duplicates all item options.
Make time range parsing smarter. Notice items now widen themselves to use all available space. Changed dayview window names to not have underscores Allow multiple calendars to be opened correctly. Added regression tests. Bug fixes in remove-include of dirty calendar.