[geometry] Bugfix get point-type instead of segment-type
[geometry] Removed unnecessary includes
[geometry] Comment change
[geometry] Added static assert
[geometry] Removed now unused method
[geometry] Removed now redundant template parameters from segment-intersection
strategies.
[geometry] Added (probably temporary) comment
[geometry] Made SegmentRatio a template parameter as was intended.
Still TODO: it should come from a robustness-policy
[geometry] Merged rescale policy and (rudimentary) robustness policy.
We should decide how we call this thing (probably RobustnessPolicy as it
decides for types, ratio-types, rescaling and other behaviour related to
robustness)