Add -v and --verbose flags.

[dhbaird]

No description provided.

[jpetazzo]

Wouldn't it be easier to use set -x for that?

[bartmeuris]

To be honest, this seems like a cleaner sollution, set -x becomes very spammy, this shows only the commands pipework executes on purpose...

[jpetazzo]

Hi!

1. Allow to apologize for the slow answer. I appreciate the contribution, just got swamped under things and couldn't answer earlier!
2. You're right. set -x is too spammy, I like your option better.
3. I have one suggestion; what do you think about outputting debug info to stderr?
4. And another one: what about defining a debug() function, and use that when you need to display something (and call it from run())?
5. Last but not least: if you're willing to rebase (and possibly integrate ideas 3 and 4 since that should be pretty easy :-)) I will be super happy to merge this!

Thanks once again.

[jpetazzo]

I'll close this PR, but if somebody wants to work on a similar feature, let me know and reference this one. Thank you!