Timer doesn't update spent time each second

[Kovsonq]

When I use uneven cycle (download objects with different size) timer doesn't display (real) spent time during downloading proccess, it updates current and estimated time only when I call new stepTo method.

It looks like:
1 1/73 (0:00:01 / 0:10:00)
2 1/73 (0:00:01 / 0:10:00)
3 1/73 (0:00:01 / 0:10:00)
4 2/73 (0:00:04 / 0:15:00)
5 2/73 (0:00:04 / 0:15:00)

Not:
1 1/73 (0:00:01 / 0:00:00)
2 1/73 (0:00:02 / 0:00:00)
3 1/73 (0:00:03 / 0:00:00)
4 2/73 (0:00:04 / 0:00:00)
5 2/73 (0:00:05 / 0:00:00)

[Kovsonq]

I think It happens because actual progress isn't made to call ProgressBarRenderer.render()

[Kovsonq]

I saw the issue #91 but if I want to display that current process is working I want to update timer each second, because if it's frozen it seems stopped.
May be the best solution is to add the flag - update or not timer accordingly to updateIntervalMillis, else we always ignore this value.