USER: New physics class included for testing (will become base for future physics class). Used for testing to varify the rest of the code. A bug in the reconstruction class was found and fixed (Kinetic Energy actually was including the masses, oops!). Now a missing mass calculated off the pi0 comes out to the proton mass (exciting!)... Many changes were done to the base tree managers to make them more general (and more will be done as well). Routines were added to GoATTreeManager to allow for the physics classes to loop over entries in trees defined in the GoAT classes, and those defined by Acqu classes. The tree managers now have new names to reflect their new class names.