added optional extra arguments to plot program
converted from iterating K_ij to ATilde_ij.  now all I need is to add connBar^i iteration and it is completely ADM
changed constraints to be dependent on BSSN variables (courtesy of Baumgarte & Shapiro p.390).  I just noticed my Bowen-York constraint values are bad right now.  Gotta fix that up.
got rid of some variables that weren't being used
added constraints to determinants of advected values.  2D is messed up.  or Bowen York.  or both.