CRAN-compliant version of the C++ code.
Mostly changes requested by CRAN about how to handle the data and the dictionaries.
- Refactored to use C++11 and pugixml instead of C++17 and Apache Xerces. This simplifies the build process.
- Corrects and issue with the inconsistent use of uppercase and lowercase with some dictionaries (e.g., Bolivian Census 2001).
- First release of the open-redatam project.
- It works with most of the REDATAM databases we found in the web.