add polynomialregressor object to libmanipulation

Author: lewardo

init/fluid.libmanipulation-init.txt

@@ -15,3 +15,4 @@ max objectfile fluid.grid~ fluid.libmanipulation fluid.grid~;
 max objectfile fluid.datasetquery~ fluid.libmanipulation fluid.datasetquery~;
 max objectfile fluid.mlpregressor~ fluid.libmanipulation fluid.mlpregressor~;
 max objectfile fluid.mlpclassifier~ fluid.libmanipulation fluid.mlpclassifier~;
+max objectfile fluid.polynomialregressor~ fluid.libmanipulation fluid.polynomialregressor~;