Starting Plinkagon

Added an effect that makes the bomb spawn a little clone when it hits a
bumper, to be tied into an upgrade purchased through the plinkagon
system.
Plinkagon Progress

Getting there...
More Plinkagon Progress

Basic plinkagon system is in place, about to overhaul coinhit events to
allow for value multipliers...
PegHunter Created

Still need to iron out peghunters targeting the pegs that created them,
and move all PlinkagonUpgrade.Rolls to create events sent to factories
PegHunter Stabilized

...relatively.
various ui fixes
Plinkagons Plinking
Merge pull request #14 from InfernalLogic/plinkagon_system

Plinkagon system