From #235:

In theory, this would sort trait use statements as well, but it does not handle traits with docblocks (generic traits are a thing).

I thought about adding slevomat/coding-standard@master/doc/classes.md#slevomatcodingstandardclassestraituseorder- and maybe slevomat/coding-standard@master/doc/classes.md#slevomatcodingstandardclassestraitusespacing- but those have also issues with docblocks on traits.