The Simple Sprite Renderer library doesn't work with images directly, but instead you create so-called "objects".
These objects can take a sprite, a position, and a "layer" property, which determines which objects are rendered in front. You can also specify the center of the player's viewport on the map, which can be moved easily.
The PyGame implementation uses internal tiles, and only redraws those tiles that have changed. The engine supports planes of arbitrary size, however, the plane can not be resized at runtime currently.
Missing features include animations, scaling and rotation. An implementation on top of openGL is planned.