Remove deprecated references in Cask file
Refactor - Clean dead code
- [X] Release notes
* DONE 0.5.2 [100%]

  # Please enter the commit message for your changes. Lines starting
  # with '#' will be ignored, and an empty message aborts the commit.
  # On branch 0.5.2
  # Changes to be committed:
  #   (use "git reset HEAD <file>..." to unstage)
  #
  #	modified:   TODO.org
  #