Updates the progress bar for the current plug-in.
The library will handle over-updating by possibly dropping silently some updates when they happen too close next to each other (either time-wise or step-wise). The caller does not have to take care of this aspect of progression and can focus on computing relevant progression steps.
| percentage |
Percentage of progress completed (in the range from 0.0 to 1.0). |
|
TRUE on success. |