Update: makefile and IPT_VARS
update: added optical conductivity calculation in hmipt_real_2dsquare to compare with calculation
in the non-eq DMFT code.
Update: working version of the Attractive IPT w/ Keldysh and Voltage Bias.
Problems from attractive new codes. I probably introduced a bug either in the drivers or in the
IPT_SC module.
Update: Keldysh formulation of the Attractive Model Solution.