removed fetchOne and fetchValue from ReaderInterface
removed fetchOne and fetchValue from ReaderInterface

thephpleague/csv,HeyRatFans/csv,mortenhauberg/csv,hmcclungiii/csv-1,postalservice14/csv,vlakarados/csv,Perlkonig/grav-plugin-table-importer,Teino1978-Corp/Teino1978-Corp-csv,stof/csv