add new version 6.0.0-rc1
add new version 6.0.0-rc1

ismailsimsek/schemaspy,wkasa/schemaspy,Riggs333/schemaspy,Riggs333/schemaspy,ismailsimsek/schemaspy,wkasa/schemaspy,ismailsimsek/schemaspy,ismailsimsek/schemaspy,wkasa/schemaspy,Riggs333/schemaspy,wkasa/schemaspy,Riggs333/schemaspy