Change rubocop gem to reference rom-rb version
Add note about preferring git: and https URLs in a Gemfile
Support multiple namespaces in mutant config
Restore wildcard-based namespacing in mutant task
Update rubocop gem dependency to reference upstream repo
Disable yardstick if config is not present
Update default rspec strategy
Upgrade yardstick gem dependency
Refactor mutant task
Update rubocop configuration to have common settings
Remove deprecated strategy option from mutant config
Change flog to only run under 1.9.3
Change mutant to use a default name
Update flog threshold
Refactor reek task to use project config

* When config is not found reek will be disabled
* Remove legacy warnings from reek task
* Add app folder to list of directories for reek to scan
Add stub yardstick tasks when it is disabled
Update flay threshold
Bump reek dependency in shared Gemfile
Bump rubocop dependency in shared Gemfile