added new gameplay mechanic: detached letters. when hitting another rocket containing a that same letter, it is detached from the victim's name again.
added sounds for bounces
added new upgrade "chargedintercept"
added new upgrade "superletters"
added upgrade "loose screw"
added new upgrade "heavyhitter"
added new upgrade "interceptor v2"
added new update shop item "Refined Aerodynamics"
added achievement "Detachment Issues"
changed or improved some of the icons