Renamed Explosion system
Added ParticleSystem component support
Began work on explosion particles
Particle system update doesn't destroy system
Particle system entity position moves emitter
Messed with explosion particles
Renamed "content" directory to "entities"

This is how I will structure the directories.
Rearranged and cleaned up A LOT OF THINGS

Lots of breakage after this.
Tweaked explosion particles
Merge 'upstream/master'

Conflicts resolved
Made all renames in code

Game operates as per normal - yet to change to upstream explosion effect