Fix release versioning (#21)
Fix release versioning (#21)

This was broken when we renamed the `master` branch. Now it should work
correctly. #none
omegaup/omegajail,omegaup/omegajail,omegaup/omegajail,omegaup/omegajail,omegaup/omegajail,omegaup/omegajail,omegaup/omegajail,omegaup/omegajail,omegaup/omegajail,omegaup/omegajail,omegaup/omegajail