Reorder default() constructor order to match that of the struct

Makes it easier to verify the default values mentioned in the docstrings.

src/dynamics/integration_parameters.rs

@@ -186,15 +186,16 @@ impl Default for IntegrationParameters {
             dt: 1.0 / 60.0,
             inv_dt: 60.0,
             //        multithreading_enabled:             true,
+            return_after_ccd_substep: false,
             erp: 0.2,
             joint_erp: 0.2,
             warmstart_coeff: 1.0,
             restitution_velocity_threshold: 1.0,
             allowed_linear_error: 0.005,
+            prediction_distance: 0.002,
             allowed_angular_error: 0.001,
             max_linear_correction: 0.2,
             max_angular_correction: 0.2,
-            prediction_distance: 0.002,
             max_stabilization_multiplier: 0.2,
             max_velocity_iterations: 4,
             max_position_iterations: 1,
@@ -206,7 +207,6 @@ impl Default for IntegrationParameters {
             min_island_size: 128,
             max_ccd_position_iterations: 10,
             max_ccd_substeps: 1,
-            return_after_ccd_substep: false,
             multiple_ccd_substep_sensor_events_enabled: false,
             ccd_on_penetration_enabled: false,
         }