Add readString method
Add cell type
Add eq method
Make Svalue class
Merge branch 'feature/add-eq' into develop
Add .gitignore for gtags
Hide Svalue constructors
Compare object value
Hide tag specification
Remove == operator
Add symbol
Simplify class name
Test all with "make test"
Handle ostream for debug
Read list
Eliminate intermediate dot
Return read error
Add compiler
Skip line comment
Read symbol