Patch: Internal Upgrade, Treasure and 4k quickfix

A small end of the weekend update. The big one for us is that we've upgraded to Unity 2019.1. This release contains some features which will help us increase performance on heavy tasks as well as some Timeline features which will help us finalize the "emote" system.

There is now also a couple of treasure tiles to go with our dragon!  So you can start hoarding those in its name.

Finally, we've got a quick fix for 4k UI scaling. Later we'll add controls for UI scaling, but currently, it just checks if the screen height is close to 4k and upscales the UI. 

Keep that feedback coming!