Arrow Trails

This adds configurable particle trails to various projectiles when shot.
Said projectiles include arrows, eggs, fireballs (large, medium and small), fish hooks, potions, snowballs, wither skulls and just plain throwable things.

This is the 1.7.2 continuation of father toast's mod. No code or methods were reused, but props to him anyway. :)

Note: By default no particles will be added. You need to go to the config file first and set things up there.