Implements a bug fix which caused the client to crash.
Implements a basic message queue.
Implements second revision of the message queue.
Implements toString for Bag.
Implements death message concrete class.
Adds logging of random seed.
Adds addition jets for testing.
Implements tracking of all jet entities in JetSystem.
Implements death messages via the message queue.
Updates client and server to compile with message queue changes.
Updates unit tests after integration of message queue.
Merge pull request #75 from absolom/msg

Pull Request - Message Queue

Closes #74.
Extends sprite loading class to load sprite sheets.
Extends sprite component to support animations.
Updates the spriteRenderSystem to support animations.
Updates UI rendering to support changes to sprite loading.
Updates demo to support new animation system.
Implements the ability to set the center of a sprite.
Pulls out animation frame index updating from SpriteRenderSystem to AnimationSystem.
Merge branch 'master' into anim