When running the test suite, tutorials/t10.geo and tutorials/c++/t10.cpp failed with the error: `libc++abi: terminating due to uncaught exception of type smlib::mathex::error: Error [mathex::parseatom()]: invalid token on expression` However, when Sin and Cos are changed to sin and cos, the error goes away. Any help in figuring out the issue on my system would be greatly appreciated.