Initial commit
Added basic files.
Added the symbolset.
Added the info.
Provided the preprocessor test environment.
Added the preprocessor.
Fix the processor.
Fix the symbolset.
Fix the info_spec.
Fix the test/preprocessor.
Supported a function of inheritance to the symbolset.
Added a stream operator to the symbolset.
Fix the symbolset.
Fix the info.
Update README.md
Fixed a problem of the compiler error occurrence when the `SYMBOLSET_DEFINE()` been called in the template class.
Fixed a problem of the compiler error occurrence when the `SYMBOLSET_DEFINE()` been called in the template class.