Added machinations diagram
Added growing to the player..

PlayerBall grows between 25 and 80%.
GDComp has been altered so it takes HalfSize instead of halfSize, this way the player's growth will be included in the collision detection.

Issue #2: PlayerBall doesn't collide correctly anymore with wall corners.
First part of adding states..

GameplayScreen has a list of states.
Regular state will always be there.
AgroState will be removed from the list once it's done.
Added follow functionality to ScoreBall..

ScoreBall has a target variably which has to be a player. If it isn't null, the ScoreBall will move to the player.
Implemented RegularState and AgroState..

AgroState fully tested.
AgroState changes the background color.
RegularState checks when to switch to AgroState.
DynamicsScreen implements RegularState.
GameplayScreen now has a RemoveTopState function.
Game1 now has a Background property which determines the background color.