made mri_stone ID
added more diagnostics
mri_stone was unfinished
added fieldloop, still needs testing
added 2d diagnostics, tweaked fieldloop initial data
changed fieldloop
changed fieldloop
make it so that rm of inner cell is at 0 when NoInnerBC==1
fixed bug in previous commit
small change to stone ID
added crazygrav for fieldloop, added psi to diagnostics, added option to zero psi on boundary
added C_KEPLER option
added C_OMEGA20 option
fixed bug in GradPsi
this is currently a disaster, clean it up
made changes to dedner
cleaned up a bit
added  0.5 factor in riemann_setup_p
fixed a few bugs
fixed readpar bug and tweaked outflow BC