Need documents on how to release

[luchsh]

Given that we are working on an opensource project, I'd like to propose to opensource the releasing process.

Maybe following work can be documented on Wiki:

• Release model
  • cadence: like milestones, maybe we can use the 'Projects' page of this repo
  • code quality of each release, how to prevent regression
• Steps
  • code, artifacts to update
  • documents to update
  • where to announce
• Roles
  • who is responsible of making a release?

Below simple PR of release does not behave elegantly like other opensource projects: https://github.com/bytedance/gopkg/pull/26