Overcommit 0.34.0

Mostly bug fixes with a few minor enhancements.

• Fix Scalastyle pre-commit hook to capture messages with no line number
• Fix CoffeeLint pre-commit hook detection of modified lines
• Fix Jscs pre-commit hook to work with jscs 3.0.0+
• Fix CapitalizedSubject pre-commit hook to ignore commit message subjects
  starting with fixup! or squash! special prefixes
• Add BundleOutdated pre-commit hook to report gems in the Gemfile.lock
  that have newer versions available
• Add destructive_only option to ProtectedBranches pre-push hook
• Include .ru files in RuboCop pre-commit hook
• Fix TextWidth to ignore special fixup!/squash! prefixes in commit
  message subjects when determining width of line