Adds semi-custom particle effect loading, similar to sound effects.

Fixes custom sound effects not unloading when returning to main menu or loading a save file.

Version 1.7, adds custom sound effect support

Prevented plugins (e.g. Extra Vehicle Effects) from crashing the entire mod if they throw an exception during loading.

Green DLC thing update, stuff works again

Changed editor button position to top left corner (may end up behind EAE's panels, just move them out of the way)

Mass Transit

Added asset editor editor to make it easier for asset creators to add effects to their vehicles.

Added support for loading definitions from mod folders.

Small bugfix