3.1.0

• Split code into smaller modules + added tests for them. Closes #68
• Support for different configs via https://github.com/davidtheclark/cosmiconfig. Closes #64
• Run separate linters concurrently by default
• Added concurrent option to the config. Closes #63
• Switched to https://github.com/okonet/eslint-config-okonet
• lint-staged now work from sub-directories. #65 by @TheWolfNL
• Output both stdout and stderr in case of error. Closes #66