iOS Diagram Engine (Swift, Sprite Kit)

The result of this project should be a (slim!) diagram engine (not a whole app!) written in Swift (4.2) that can be used in apps for iOS devices and uses SpriteKit. The full source code should be delivered and a simple playground should be provided as demo. The source should be implemented as "framework" to be easily included in other projects. The engine should be able to: - Initialize with a specific X/Y range (support positive and negative values on Y axis, X axis are Date objects with date and time) - Incoming data might have changing intervals - Possibility to add markers (=Dots with X/Y coordinates and specific color + Label) - Possibility to add horizontal Lines of specific color - Y Scale should adjust if values out of visible range - Show multiple graphs of X/Y Data and interpolate lines - Functionality to Show/Hide each individual Graph - Support Gestures to scroll and Zoom smoothly on the X-Axis - Support Live Update of the Data (i.e. auto-scroll if scrolled to the end) - Support Touch to Show Values of a specific Timestamp (i.e. stop auto-scroll but keep adding data to the end) Thanks!