All of the calls to `factory->prepObjects` ([here](https://github.com/LLNL/GridDyn/blob/cf850abcc921f9f1bfea917ffc03a966d64c0a6a/src/fileInput/gridReadMatPower.cpp#L104) for example) result in memory leaks. I'm not sure why that happens. Deleting these calls probably degrades performance across successive deconstructions and constructions, but it also fixes the leaks.
