Removed now-unnecessary array padding function
N and S 0Slope0Shear b.c.'s implemented
Found error in W b.c.: forgot '_coeff_ij'
Return BC_W, BC_E, np.nan, np.inf to former places. Note issue with nan/inf and order of n/s/w/e b.c.'s
Remove extra debugging
0Moment0Shear interfering b.c.'s