Release v0.7.0 (#324)

It's getting close to a year, we should do a release! As usual I did a
bit of rewording in the changelog, and also changed this and past
changelogs to not treat dropping older Go versions as breaking per our
handy new versioning policy.

Fixes #321.

I have:
- [x] Written a clear PR title and description (above)
- [x] Signed the [Khan Academy CLA](https://www.khanacademy.org/r/cla)
- [x] Added tests covering my changes, if applicable (n/a)
- [x] Included a link to the issue fixed, if applicable
- [x] Included documentation, for new features (n/a)
- [x] Added an entry to the changelog

Release v0.6.0 (#269)

It's been quite a while! Let's cut a release. I also added some docs
with a checklist, although it's mostly not very interesting.

Test plan: read recent issues

Release v0.5.0 (#208)

It feels like just yesterday, but it's been over four months since our
last release! So it's as good a time as any; while there are quite a few
changes they're individually mostly small. As usual, this updates the
changelog, and I'll tag it with the release once it lands.

Test plan: no relevant bug reports lately

Release v0.4.0 (#174)

It's been a while, time for a release! This commit updates the
changelog including a few missing entries, and I'll tag it with
the release once it lands.

Fixes #163 

Test plan: Craig tested a fairly recent main branch in webapp.

[🔥AUDIT🔥] Release v0.3.0 (#125)

🖍 _This is an audit!_ 🖍

## Summary:
We've had a few more new features in the few days since 0.2.0!  Craig
has run the webapp tests on this too.  This commit updates the
changelog, and I'll tag it with the release once it lands.

## Test plan:
crossed fingers


Author: benjaminjkraft

Auditors: csilvers, dnerdy, StevenACoffman

Required Reviewers: 

Approved By: 

Checks: ⌛ Test (1.17), ⌛ Test (1.16), ⌛ Test (1.15), ⌛ Test (1.14), ⌛ Lint, ⌛ Test (1.17), ⌛ Test (1.16), ✅ Test (1.15), ⌛ Test (1.14), ✅ Lint

Pull Request URL: #125

[🔥AUDIT🔥] Release v0.2.0 (#119)

🖍 _This is an audit!_ 🖍

## Summary:
With the blog post going up soon, and a few new features, it's time for
another release!  (Plus, Craig has run the webapp tests on this commit,
so it's now extra-tested.)  This commit updates the changelog, and I'll
tag it with the release once it lands.

## Test plan:
crossed fingers


Author: benjaminjkraft

Auditors: csilvers, dnerdy, StevenACoffman

Required Reviewers: 

Approved By: 

Checks: ⌛ Test (1.17), ⌛ Test (1.16), ⌛ Test (1.15), ⌛ Test (1.14), ⌛ Lint, ⌛ Test (1.17), ⌛ Test (1.16), ⌛ Test (1.15), ⌛ Test (1.14), ⌛ Lint

Pull Request URL: #119

Add open-source boilerplate (#96)

## Summary:
There's a lot these days!  I got most of it from the GitHub docs [1], as
well as looking at other projects.  I'll probably hold off on landing
this until a couple more things land, then land this and tag v0.1.0.

[1] https://docs.github.com/en/communities

Issue: #35

## Test plan: view in github UI


Author: benjaminjkraft

Reviewers: jvoll, StevenACoffman, aberkan, dnerdy, mahtabsabet, MiguelCastillo

Required Reviewers: 

Approved By: jvoll, StevenACoffman

Checks: ✅ Test (1.17), ✅ Test (1.16), ✅ Test (1.15), ✅ Test (1.14), ✅ Lint, ✅ Test (1.17), ✅ Test (1.16), ✅ Test (1.15), ✅ Test (1.14), ✅ Lint

Pull Request URL: #96