Progress Bar while rendering animation and notification after rendering is done

Progress Bar while rendering animation (based on procentage of rendered already keyframes divided by all amount of keyframes set to be rendered in current rendering session) would be very helpful, as well as estimating remaining time (based on how long was average time of rendering frames already in current rendering session, for example: 000frame took 3 seconds, 001frame took 3.2 seconds - average rendering time of a frame in current session is : 3.1 seconds, and now we have 200 frames more to render, so 200 * 3.1 is 620 seconds, but in human format it is: 10minutes and 20seconds.

And please, any visible notification after rendering is done! :D