Updated debugger-ruby_core_source
Removed redundant line object
Disable SignalException Cop

https://github.com/thoughtbot/hound/issues/262
Update rubocop and dependant gems

houndci.com was giving me false warnings about things the latest
Rubocop gem doesn’t complain about.
Merge pull request #273 from blacklane/update-rubocop-gem-0.22.0

Upgrade RuboCop to version 0.22.0.
update rails and change debugger to byebug