Added a new animated switch model.
Added sound effects to switch from Freesound.org.
Fixed issue where complex switch networks would not always work properly.
Added two new features to the particle engine, directional particles and stretched particles. Directional particles rotate to the direction they are traveling and stretched particles stretch depending on how fast they are going.
Both features have been used on the new sparking effect when the switch is open/closed. Here is a short video showing them off!