Missing support for rector 0.6

[snapshotpl]

 [ERROR] Class "Rector\Rector\Function_\RenameFunctionRector" was not found while loading                               
         "vendor/thecodingmachine/safe/rector-migrate.yml" file. Are you sure it is correctly spelled? in               
         /var/www/vendor/thecodingmachine/safe/rector-migrate.yml (which is being imported from "/var/www/rector.yml").

[Kharhamel]

#176

[Kharhamel]

Support was added in 1.0.1