Orbital Ion Cannon 1.3.0

Updated for Factorio 0.13 (thanks to Danielv123 for assisting).
25% more BOOM: Increased default blast radius from 20 to 25.
Add config option to disable printing messages to the console whenever an ion cannon fires or an auto-targeting station acquires a target.
Added a dark_background_icon to the Targeting Device, to improve visibility in some situations.
"Select Target" should now play more promptly upon grabbing a Targeting Device.
The Auto-Targeting Station no longer prints messages when all ion cannons are on cooldown.
Added an option in config.lua to toggle targeting of both worms & spawners or just spawners only (courtesy of madmaxoft).
Performance optimizations.
Increased default Auto-Targeting range to 400.