text: Title: Change logs missing.
  Body: Really appreciate the work being doing by the contributors.
  
  ### Issue:
  
  The version [0.2.2](https://pypi.org/project/pyppeteer/#history) in pypi misses change logs. How different is it from the code of 0.0.25 is something which we need to find out by doing a diff.
  
  ### Desired Result.
  
  A brief description regarding what all changes were made to the API would suffice. Details like `Addition`, `Fixes`, `Depreciation` following the https://keepachangelog.com/en/1.0.0/  will do a great benefit to the community here.