bump release to 2.3.3 (#58) 

fix workflow (#57) run workflows only for dedicated branches

Merge branch 'master' of github.com:GIScience/openrouteservice-py 

Merge pull request #42 from GIScience/41-add-more-parameters 41 add more parameters

restrict optimize_waypoints to not trigger when options or shortest a… …re used

revert sphinx as dev dependency 

remove cerberus as dep, add dev dependencies 

add optimization endpoint 

Ors v5 (#34) * update validator with new restrictions * All necessary changes implemented * added self.req as a property

#32 better dependency management