1.6.4 Overridable Errors Feature

This release brings a little enhancement: ability to override errors for test results in extended reporters:
For example, we want to pass the only causedBy throwables to allure reports:

public class ExtAllureReporter extends AllureReporter {

    @Override
    public Throwable getError(Result result) {
        return result.getError().getCause();
    }
}