Added visualization script
ModelParametersIRFRLS can be cast to ModelParametersUnified now
Moved all prediction code (and saveGridData) from ModelParameters to FunctionApproximator
GPR uses BasisFunction::Gaussian instead of covarianceFunction now
Enabled anisotropic Gaussian covariance function in GPR
Renamed ModelParametersUnified to UnifiedModel
UnifiedModel no longer derives from ModelParameters
RBFN seems to work fine by now
No more stable/testing/unstable output
Issue with size of Eigen matrices
Added FAs to tests
GPR stable now