Add ability to customize working directory of forked process

[cla-bot[bot]]

Thank you for your pull request and welcome to our community. We could not parse the GitHub identity of the following contributors: mykola.hryhoriev. This is most likely caused by a git client misconfiguration; please make sure to:

1. check if your git client is configured with an email to sign commits git config --list | grep email
2. If not, set it up using git config --global user.email email@example.com
3. Make sure that the git commit email is configured in your GitHub account settings, see https://github.com/settings/emails

[cla-bot[bot]]

Hi @GrigorievNick, we require contributors to sign our Contributor License Agreement, and we don't have yours on file. In order for us to review and merge your code, please access https://www.artima.com/cla/choose-type to sign our Contributor License Agreement. Your effort is highly appreciated. Thank you.

[artimasites]

@cla-bot[bot] check

[cla-bot[bot]]

The cla-bot has been summoned, and re-checked this pull request!

[GrigorievNick]

Who can review this?

[bvenners]

@GrigorievNick Tnx for the contribution. Sorry for the delay in reviewing. I've assigned it to Chee Seng so he'll look at it soon.

[GrigorievNick]

Any news on it, I don't want to keep my custom fork in Company's corporate repo for too long.

[cheeseng]

@GrigorievNick I am really sorry for getting back here so late, hopefully this round we'll get this in!