Method verbosity

tests/catch.hpp:7873–7873

    int Config::abortAfter() const                     { return m_data.abortAfter; }
    bool Config::showInvisibles() const                { return m_data.showInvisibles; }
    Verbosity Config::verbosity() const                { return m_data.verbosity; }

    IStream const* Config::openStream() {
        return Catch::makeStream(m_data.outputFilename);