bundler_migration_decision_tree

bundler_migration_decision_tree

- do we still use this library?
- is it a first and/or second degree dependency? If a second degree dependency, may not need to explicitly reference it in gemfile
(- can it be easily replaced with another existing library (?), note it for later tasks)
- how is it currently stored, frozen/submoduled/which repository
   - is forked:
       - did weplay fork and make changes? if not, prefer canonical source (gem first, git second) for clarity, (consider deleting fork later on ... not now!)
       - is the submodule at the HEAD of the fork? if no, reference the SHA in the gemfile. if yes, SHA not needed
   - if frozen, are there changes from frozen version
      - if yes, create new github repo
   - if no, use canonical version
- remove old reference (rm -rf the dir)
  - if submodule
    - git rm --cached thedir
    - edit .gitmodules and .git/config

plugins:
- does it have a gemspec?