* Removed SnapGridOffset, there is only center now.
* SnapGridComponent methods are now static.
* Removed SnapGridComponent.OnPositionChanged.
* Refactored static functions off SnapGridComponent to MapGrid.
Refactored away usages of SnapGridComponent.Position.
* Added Transform.Anchored for checking if an entity is a tile entity.
More refactoring for static MapGrid functions.
* Static snapgrid methods on MapGrid are no longer static.
* Removed IMapGrid.SnapSize, it is now always equal to the IMapGrid.TileSize.
* Add setter to ITransformComponent.Anchored.
Removed direct references to SnapGridComponent from content.
* Grid functions now deal with EntityUids instead of SnapGridComponents.
Began renaming public API functions from SnapGrid to Anchor.
* Add some unit tests.
* SnapGridComponent now anchors itself in startup, instead of Initialize (sending directed events in init is an error).
* Removed the Interfaces folder.
* All objects inside the GameObjects subfolders are now in the GameObjects namespace.
* Added a Resharper DotSettings file to mark the GameObjects subfolders as not providing namespaces.
* Simplified Robust.client.Graphics namespace.
* Automated remove redundant using statements.
* Added centered unit box static field to Box2.
* MapGrid is more testable.
* Added some unit tests for MapGrid.
Fixed bug in MapChunk.GridTileToLocal().
MapGrid.UpdateAABB() actually expands properly now.
* Moved IMapChunk to Robust.Shared.Map.
Moved Chunk class out of MapManager class.
* Added unit tests for MapChunk.
* Bounds reduce by 1, so almost working.
* Now bound shrinking works :D
* Moved MapGrid out of MapManager.
Moved IMapGrid into the Shared/Map folder.
Replaced all calls to IMapGrid.ParentMap.Index with IMapGrid.ParentMapId.
* Added more MapGrid unit tests.
Fixed a bug in TryGetTileRef.
