reslario

`enable_header` should not be `true` by default

1

This feature is questionable at best to have in production, the thought of someone not noticing it's enabled makes me a bit uneasy.

## Is your feature request related to a problem? Please describe. The [Rails/SquishedSQLHeredocs](https://www.rubydoc.info/gems/rubocop-rails/2.9.1/RuboCop/Cop/Rails/SquishedSQLHeredocs) lint requires SQL heredocs to be `.squish`ed, which, as the docs mention, can change the meaning of...