8 * Make miniobject a simple boxed type
9 * reverse negotiation with an event
13 * Handle strides for video
14 * express crop, scaling, region of interest, ...
15 * Better support for foreign objects such as Cairo, OpenGL, OMX, ...
17 - make dynamic pipelines easier
19 * sticky event propagation
20 * newsegment simplifications
21 * per-pad time offsets