Changing player rendering function to render-player
render-player-stats now uses 2nd argument (entity, i.e. player)
Upgrading bound checking logic in move-player!
Minor fixes/renames in world.render-world
Implemented digger, refactored moving...

into can-move? and move!, using the functions passed to the component.
Inverted renderable :pri so that a higher priority means it’ll be
executed before lower priority tasks.
Made desktop window size based on block-size and number of blocks, will
need to investigate window-sizes on Android and iOS.