Simpler way to compute GPR variance
Save griddata for better plotting for IRFRLS
Conversion to UnifiedModel wasn't working for GPR for n_dims>=2
Added accessor function for weights
Tuned meta-parameters and 2D target function for testFunctionApproximatorTraining
Rewrite of plotting functions.
Check for inputs_grid.txt first when plotting
Faster training for testToUnifiedModel
Updated todo list