Note the focus on the YAML Failsafe ruleset

[BigBlueHat]

I was confused by the "no numeric keys" requirement (see #34), but found that it's actually part of YAML and known as the failsafe ruleset.

It may help future folks to know that this library focused exclusively(?) on processing YAML per that ruleset--the use of which is a requirement in OpenAPI Specification 3.x per the format section

Cheers!
🎩