added simple math and charts modules

vendor/andileco/eval-math/LICENSE

@@ -0,0 +1,25 @@
+LICENSE
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are
+    met:
+    
+    1   Redistributions of source code must retain the above copyright
+        notice, this list of conditions and the following disclaimer.
+    2.  Redistributions in binary form must reproduce the above copyright
+        notice, this list of conditions and the following disclaimer in the
+        documentation and/or other materials provided with the distribution.
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+        products derived from this software without specific prior written
+        permission.
+    
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+    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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