Support YAML anchors #35
Description
Anchors are fully supported in libfyaml, but we need to take some extra steps to process and resolve them. There is in fact one reference file used in the tests that contains some anchors, and the test currently does not have the correct expected output (on the basis that anchors are not supported yet). I think they should also be resolved automatically and transparently when getting values of a YAML file, perhaps with an option to query whether the values was resolved via an anchor reference.