switched to more standardized PackageBuilder system.
Added Destroyer, Singleton, and TIFactory
Adapting Singleton and TIFactory
Moved Destoryer, Singleton, and TIFactory to the (new) Utility subdirectory
Many updates: using a new FindROOT version. Fixed HelperFunctiosn. Added TPlottable.
Fixes to TMultiPlotter, and TIFactory.
forgot to add CMakeMacroParseArguments to the repo earlier