* **power-assert-formatter:**
* move built-in renderers to ./built-in/ ([acf85109](https://github.com/twada/power-assert-formatter/commit/acf85109bcb579109b80a36a8a6439c4e028066d))
* customize rendering by using custom renderer constructor in `renderers` option ([265d3539](https://github.com/twada/power-assert-formatter/commit/265d353997f7321e9e24c5252c7aa0f4c696624a))
* use EventEmitter to make renderers customizable ([7c190e11](https://github.com/twada/power-assert-formatter/commit/7c190e1170de8c96129a2ccd3e67fd9f14623732))
* built-in renderers are listed as relative path
If you are customizing renderers by `options.renderers`, you may have to migrate.
To migrate, change your code from the following:
```
[
'file',
'assertion',
'diagram',
'binary-expression'
]
```
To:
```
[
'./built-in/file',
'./built-in/assertion',
'./built-in/diagram',
'./built-in/binary-expression'
]
```
([265d3539](https://github.com/twada/power-assert-formatter/commit/265d353997f7321e9e24c5252c7aa0f4c696624a)), ([acf85109](https://github.com/twada/power-assert-formatter/commit/acf85109bcb579109b80a36a8a6439c4e028066d))