I didn't see any reference to this feature in the documentation, so forgive me if it already exists.
Most linters allow disableing of rules per line with something like:
// kwstyle-disable-NameOfClass
// kwstyle-enable-NameOfClass
This would avoid the need to ignore a file completely if there is one exception to the rules within the file.
If this feature already exists we should put it in the documentation.