fix: inc after work

[tatref]

See #521

[djc]

I guess this makes sense. I hesitate to spend much more time on this, but I do wonder if some of these set_message() calls belong before the sleep()/work?

[tatref]

I guess the effect of set_message is only seen after calling inc? So this should probably be just after inc?

I missed it in the finebars example:

thread::sleep(wait);
pb.inc(1);
pb.set_message(format!("{:3}%", 100 * i / 512));

[djc]

I guess the effect of set_message is only seen after calling inc? So this should probably be just after inc?

Hmm, I suppose both set_message() and inc() will end up calling ProgressState::update_estimate_and_draw() so it probably doesn't really matter which one goes first.