Carefully explained the checksum problem.

[ioggstream]

This PR

Explains why we need requirement for selected representation

Note

I somewhat repeated part of the introduction to explicitly clarify the requirement and make this document independent from the reading of RFC3230

[ioggstream]

Hi @LPardue

here's the artifact for this build. Is that good enough to share it with the others?

• https://19-183264553-gh.circle-artifacts.com/0/tmp/artifacts/draft-polli-resource-digests-http.html#rfc.section.2

Thx++, R