Upgrade to RuboCop 0.28.0 dependency.
Vendor rubocop-0.28.0 upstream configuration.
Make BracesAroundHashParameters context dependent.
Disable Style/EmptyElse cop.
Disable Style/EmptyLinesAroundBlockBody cop.
Removed temporary fixes due to issues in RuboCop 0.27.0 release.
Release 1.4.0, running with RuboCop 0.28.0.