improve parsing of symbols.txt to handle blank lines and spaces after symbols. using strformating instead of concatenation
improve parsing of symbols.txt to handle blank lines and spaces after symbols. using strformating instead of concatenation

michaelhuang/QuantSoftwareToolkit,QuantSoftware/QuantSoftwareToolkit,michaelhuang/QuantSoftwareToolkit,QuantSoftware/QuantSoftwareToolkit,QuantSoftware/QuantSoftwareToolkit,michaelhuang/QuantSoftwareToolkit,QuantSoftware/QuantSoftwareToolkit,michaelhuang/QuantSoftwareToolkit,QuantSoftware/QuantSoftwareToolkit,michaelhuang/QuantSoftwareToolkit,michaelhuang/QuantSoftwareToolkit,QuantSoftware/QuantSoftwareToolkit