Add a non zero init value for bars

[Liupold]

A non zero init value will be really helpful, As it would make the average speed and eta more accurate for resume able task. Hope I can convey my thoughts clearly.

[vbauerster]

Hi! I know what you mean, because I faced the same issue in my getparty project, but was a bit lazy to undertake something without a good push. So thank you for your observation, I'll make sure to fix this.

[vbauerster]

It's possible now to pass user defined start time with following constructor functions:

• NewAverageETA
• NewAverageSpeed

Or update all average decorators afterwards with:

• AdjustAverageDecorators

Example usage is here.

[Liupold]

Thanks a lot, for this quick response.