added simple math and charts modules

vendor/andileco/eval-math/src/Exception/BuiltInFunctionRedefinitionException.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * @author Serge Rodovnichenko <serge@syrnik.com>
+ * @copyright Serge Rodovnichenko, 2019
+ * @license BSD 2.0
+ */
+
+namespace Andileco\Util\EvalMath\Exception;
+
+
+class BuiltInFunctionRedefinitionException extends AbstractEvalMathException
+{
+    protected $message = 'Cannot redefine built-in function :function()';
+}