Latent Streaming Level Node for UE4

A latent streaming level node for Blueprints in Unreal Engine 4.
This node lets you load a level dynamically into World Composition whilst executing other code. Asyncronous level loading helps avoid hitching and gives opportunity to adjust the user experience so they don't feel like they are lagging or performance is bad.
The demo is setup as a project to show how to create a persistent level with no levels loaded, and then load a dynamic level rather than preload the level. This helps the dynamic level creation process.