makeItemFileName etc moved into gitUtilities.R
Updating examples.
Fix the hideOutput option.
Remove unnecessary comments and code.
Place SwapItem into its own file. (Specifier is not the only SwapItem; Variable also.)
Added dput2.R
Refactored so that SwapItem objects, especially scenarios, are saved to the SwapMeet, with all filename fields filled in. No RefClasses needed!
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