Temporary github PR template for sprint
@datapythonista do you think this would be useful to repeat it once more here?
Absolutely! I thought on that actually, I think it's great.

I'm not 100% sure, but I'd ask people to copy the output of `validate_docstrings.py` in the description. First that would avoid the temptation of some people of marking the check without running it. Then for shared docstrings it'd show the rendered one for that function. And finally, in cases when the validation shows errors that make sense ignoring, it'll be quite easy to find which ones they are. I think that's a good idea. Of course, in the back-and-forth review process, this will change, but we can always ask them to update it. # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/20055?src=pr&el=h1) Report
> Merging [#20055](https://codecov.io/gh/pandas-dev/pandas/pull/20055?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/b6691127523f965003dbf877a358c81af5012989?src=pr&el=desc) will **increase** coverage by `0.02%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/20055/graphs/tree.svg?src=pr&width=650&token=eZ4WkYLtcO&height=150)](https://codecov.io/gh/pandas-dev/pandas/pull/20055?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #20055      +/-   ##
==========================================
+ Coverage   91.69%   91.71%   +0.02%     
==========================================
  Files         150      150              
  Lines       49112    49112              
==========================================
+ Hits        45035    45045      +10     
+ Misses       4077     4067      -10
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.1% <ø> (+0.02%)` | :arrow_up: |
| #single | `41.86% <ø> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/20055?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/util/testing.py](https://codecov.io/gh/pandas-dev/pandas/pull/20055/diff?src=pr&el=tree#diff-cGFuZGFzL3V0aWwvdGVzdGluZy5weQ==) | `83.64% <0%> (-0.21%)` | :arrow_down: |
| [pandas/plotting/\_converter.py](https://codecov.io/gh/pandas-dev/pandas/pull/20055/diff?src=pr&el=tree#diff-cGFuZGFzL3Bsb3R0aW5nL19jb252ZXJ0ZXIucHk=) | `66.81% <0%> (+1.73%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/20055?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/20055?src=pr&el=footer). Last update [b669112...b7f98e6](https://codecov.io/gh/pandas-dev/pandas/pull/20055?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 lgtm. pls make a revert issue for this as well (though maybe steel some ideas for the regular PR guide) Removed the details tag. I personally like it, but people often don't use it properly, let's keep it simple for this sprint