Don't expand brackets

[thinkwelltwd]

black expands brackets into multiple lines, where this:

raise ValidationError({
    NON_FIELD_ERRORS: [_("Don't do that!")],
})

raise ValidationError(
    {
        NON_FIELD_ERRORS: [_("Don't do that!")],
    }
)

The coalesced bracket version is much to be preferred in my opinion. It would be great to have a configuration option to coalesce rather than expand brackets.