travis: fixing requirements3
travis: fixing requirements3

Former-commit-id: fca6dc095ce2d0ef64d433174d8eeb1c3c29f1b3
psi29a/worldengine,esampson/worldengine,Mindwerks/worldengine,esampson/worldengine,Mindwerks/worldengine,sylvanmist/worldengine,MM1nd/worldengine,tmfoltz/worldengine,psi29a/worldengine,MM1nd/worldengine,sylvanmist/worldengine,tmfoltz/worldengine