Update rubocop

Perform a fresh auto-correction and rebuild the TODO file

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the upstream master branch.
• The tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works(if appropriate).
• I have added necessary documentation (if appropriate).

Short description of what this resolves/which issues does this fix?:

• Conflicting rubocop results with different subversions.

Changes proposed in this pull request:

• Updates rubocop to current & corrects as many open issues as possible.