This involves declaring the 20220603-variant-a the winner of the past
experiment; note in the past experiment there was not a statistically
significant winner.
This new experiment adds a variant that deviates from the new
incumbentby way of reintroducing the follows an author and adjusting the
tag follow weights.
Closesforem/forem#18082
```shell
$ diff config/feed-variants/20220617-variant-a.json \
config/feed-variants/20220712-variant.json
```
Results in:
```shell
3c3
< "description": "Blend of 20220603-variant-b and 20220603-variant-a",
---
> "description": "Builds from 20220617-variant-a (see https://github.com/forem/forem/issues/18082)",
50a51,57
> "following_author": {
> "cases": [
> [0, 0.8],
> [1, 1]
> ],
> "fallback": 0.8
> },
70,73c77,80
< [0, 0.5],
< [1, 0.85],
< [2, 0.9],
< [3, 0.95],
---
> [0, 0.3],
> [1, 0.9],
> [2, 0.95],
> [3, 0.98],
```
