Update changelog

Author: Vaan5

CHANGELOG.md

@@ -6,6 +6,8 @@
  * Fix OpenDrive Builder lane width
  * Introduced geom::AngularVelocity, geom::Velocity, geom::Acceleration, geom::Quaternion types
  * Fixed geom::Rotation::RotateVector() rotation directions of pitch and roll
+ * Added a function to get arbitrary number of contact points (`World.get_contact_points`).
+ * Added functions to get and set the wheel height.
 
 ## CARLA 0.9.16