Compare snapshots without deserializing

[iamogbz]

Is your feature request related to a problem? Please describe.

Snapshots are currently deserialized into python objects before comparison is done, this is unnecessary

Describe the solution you'd like

No deserialization is done and comparison is done on the serialized representation

Describe alternatives you've considered

N/A

Additional context

Unlocks using yaml.dumps in place of yaml.safe_dumps because loading yaml data is needless

[iamogbz]

It was never properly fixed and then subsequently reverted in #30

[noahnu]

For the yaml serializer, can we grab test names out of the file without using unsafe yaml loader?