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Keyword substitution: kv
Default branch: MAIN
Current tag: HEAD
Checking in the underlying prefs structure, and a prefPane, also fir structural integrity. Also including a couple categories to extend a couple Cocoa objects, and some project changes to support building with the bundled prefPanes. Also, added a contrib directory to house user contributed artifacts. To come soon: more prefPanes, and the colorized icon store, with pref-generated notifications to be picked up by toolbars.