V6 migration

[kclowes]

What was wrong?

We need a v6 migration guide!

How was it fixed?

Added one!

Todo:

• Add entry to the release notes

Cute Animal Picture

[fselmo]

I just found some minor tweaks. Are we trying to leave this branch open, add to it, and only merge when it's finalized?

[kclowes]

Are we trying to leave this branch open, add to it, and only merge when it's finalized?

I was thinking we'd get it in now-ish and then add to it as breaking changes come up, but open to either if you have a strong opinion.

[fselmo]

I was thinking we'd get it in now-ish and then add to it as breaking changes come up, but open to either if you have a strong opinion.

No strong opinion here, just seeing that it was still a draft but had a review request haha. I think the fact we're in beta is good enough to merge this and keep adding to it as the PRs come in. I think I'd even prefer merging this in since that gives users more time to make the changes that are already on here.

[kclowes]

I think I'd even prefer merging this in since that gives users more time to make the changes that are already on here.

Same! Updated! Lmk if there are changes that should be made to clarify the ValidationError section. That one was sort of tricky to describe.

[fselmo]

Lmk if there are changes that should be made to clarify the ValidationError section

I think this looks good for a migration guide description. We can go a bit more in depth with the actual documentation on it once that comes along. (see: #2779)

[pacrob]

lgtm, good to get in now for better visibility