b4 new contributor-oriented features

Hi, all:

If you submit patches to git, I would like to invite you to try out b4's new contributor-oriented features:

* b4 prep: allows to get your patch series ready for sending to the maintainer
  for review
* b4 send: simplifies the process of submitting your patches to the git
  mailing list -- even if you don’t have access to a compliant SMTP server
* b4 trailers: simplifies the process of retrieving code-review trailers
  received on the distribution lists and applying them to your tree

You can view this process as an alternative to GitHub PR + GitGitGadget (sans all the nice CI features, just the actual submission). You can read full documentation about this workflow here: https://b4.docs.kernel.org/en/stable-0.10.y/contributor/overview.html

Note: These features are very new, experimental, and likely contain bugs. I
would be happy to receive any problem reports or other feedback.

Best regards, Konstantin Ryabitsev