dataset.supported? now returns true or false, so we can do this
dataset.supported? now returns true or false, so we can do this

Motejl/open-data-certificate,ahmadassaf/open-data-certificate,theodi/open-data-certificate,theodi/open-data-certificate,zoul/open-data-certificate,ahmadassaf/open-data-certificate,Motejl/open-data-certificate,istvan-antal/open-data-certificate,ahmadassaf/open-data-certificate,zoul/open-data-certificate,ahmadassaf/open-data-certificate,Motejl/open-data-certificate,Motejl/open-data-certificate,zoul/open-data-certificate,istvan-antal/open-data-certificate,theodi/open-data-certificate,theodi/open-data-certificate,zoul/open-data-certificate,istvan-antal/open-data-certificate