Add world2, handles collisions and generates events for them
Update coords by velocity in world2, new war scenario in app
Fix display issue in client

Fix issue where units would continue to be simulated
after the end of events.
Remove spammy debug print
Remove extraneous console.logs
Clean up appfile.
Merge pull request #26 from Shriken/feature-newworld

Feature newworld
Merge branch 'develop' into feature-particles