SGE profiles with snakmake 8...

I'm having an issue setting up a SGE profile with snakemake 8.10.0. I tried to use the executor flag but i couldn't set it to qsub or sge. 

I get this error:
`snakemake: error: unrecognized arguments: --cluster=qsub --sge-submit=sge/sge-submit.py --sge-status=sge/sge-status.py --sge-cancel=sge/sge-cancel.py`

I also couldn't find official docs to set that up.

Thanks for your help!