Is your feature request related to a problem? Please describe.
Issue #114 added a getter for the GDTF Version of the GDTF file being parsed, which could be 1.0, 1.1, 1.2. This is returned as two reference parameters for Major and Minor version.
Describe the solution you'd like
I would like a getter to return the latest available GDTF Version, currently 1.2. This could be as a similar function with two reference parameters. Or probably more sensible as public consts.