Cpp Validator Versions Save

Update dpcumentation.

• Add examples.
• Update building scripts.
• Update documentation.

This is a major release.

1. Major optimizations and refactoring.
2. Rewritten pre-validation modules.
3. Element aggregations now can be used in member paths.
4. Validation of heterogeneous containers.
5. Validation of trees.
6. Support of value transformers.
7. Variadic properties with arbitrary number of arguments.
8. Nested validators.
9. Validation of pointers.

• Fix building with GCC 10.2 and higher.
• Support std::regex operands.
• Add dynamically allocated validators.

Fixes minor issues.

First stable release with complete documentation.

First beta release. API is ready but there is a lack of examples and documentation yet.