Feature: Support for Stacked/Styled Progress-Bars

[drothmaler]

There are certain situation where I would like to have some kind of stacked progress bar. E.g. to show the result of the tasks or to visualize some other kind of distribution within the progress...

Test 46% [xxx========> ] 20 failed; 70 successful / 200
Import 46% [xxxooo=====> ] 20 foo; 20 bar, 50 bazz / 200

It wold be nice, if this could be added to this library.

[ctongfei]

Stacked bars are actually supported with the following usage:

try (ProgressBar pb1 = new ProgressBar("Job1", max1); 
     ProgressBar pb2 = new ProgressBar("Job2", max2)) { 
    ... 
}

Styles can be customized by implementing your own ProgressBarRenderer. Right now you can use this customized renderer using this deprecated constructor, but in the next version it'll be added to the builder pattern so that you can use

ProgressBar.builder().setRenderer(...)

Thanks!