Add version number defines for libtasn1.h
Created version number defines for version checking.
Introduces new version numbering scheme minor.major.patch.
Closes #7 (closed)
- [*] Code modified for feature
- Test suite updated with functionality tests
- Test suite updated with negative tests
- Documentation updated
- There is a test suite reasonably covering new functionality or modifications
- Function naming, parameters, return values, types, etc., are consistent with other code
- This feature/change has adequate documentation added
- No obvious mistakes in the code