Funcition to verify document

[pdJeeves]

I would like a function that verifies that all naively using the document (only checking indices against -1) will not cause a buffer overrun; i tried writing this but i just started learning the gltf format this week and got confused.

I'm also pretty sure that Animation::Channel::Target::Path has only 4 valid values in the spec, and should be an enum, not a string, but maybe you know something i don't!