Merge branch 'develop'
Prototype is operational!
More speedboost when farther away, deleted other scenes, changed particle system
Made trail more of a cone and check player following based on an approximation of that cone.
Basic back and forth is possible.
Partners slow down to yield and let other take lead.
Require partner to have high enough score to overtake.
Base score on how long the partner is within distance to overtake.
Started adding tail.
Using tails to fade line drawing smoothly between stop and go.
Merge branch 'feature/back_and_forth' into develop