Add cane as development dependency
No one-letter variable names please
Check code quality by default
Fix style violations for KeysFile, KeysClient, CLI
Merge branch 'chrishunt/add-cane'

* chrishunt/add-cane:
  Fix style violations for KeysFile, KeysClient, CLI
  Check code quality by default
  No one-letter variable names please
  Add cane as development dependency