Removed JacobianGenerator (FX::setJacobian can be used instead), #910
Added FX::setDerivative, #910
Added fallback to FXInternal::getDerivativeViaJac in FXInternal::getDerivative, #910
Changed names getNumScalarInputs -> getNumInputNonzeros, getNumScalarOutputs -> getNumOutputNonzeros, #908
Added FX::getNumInputElements, FX::getNumOutputElements, #908
Fixed bug(?) in FX::fullJacobian, #908
Commented out SXFunctionInternal::getFullJacobian, #908
Added FXInternal::symbolicOutput, #908